CES Innovation Awards 2026 Honoree
S4 Wireless AI Robot Lawn Mower | 0.25 Acre LiDAR
S4 Wireless AI Robot Lawn Mower | 0.25 Acre LiDAR
Overview
Overview
Conquer the Canopy. Master the Complex Yard.
For properties shaded by grand trees or complicated by tight corridors, standard GPS robotic mowers simply cannot compete. Enter the Sunseeker S4. We’ve integrated premium 3D Light Detection and Ranging—the same advanced technology driving autonomous vehicles—into a sleek, residential mower. The S4 doesn't rely on a clear view of the sky; it actively scans its surroundings to build a precise 3D map of your yard (up to 0.25 acres). Fused with AllSense™ Vision AI, it confidently navigates heavy shade, complex landscaping, and narrow paths. It’s the definitive solution for homeowners who refuse to compromise on cutting-edge technology.
Shipping Policy
Thank you for visiting and shopping at Sunseeker. Our goal is to offer you the best shipping options. Below is the shipping terms and conditions.
Please note that the delivery time may vary depending on your location from our warehouse.
Orders are not shipped or delivered on weekends or public holidays.
If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there is a significant delay in shipping your order, we will contact you via email.
Delivery Time and Shipping Fees
United States
1. Pre-Order
Placing a pre-order does not guarantee immediate shipment. The shipping date will adhere to the scheduled dates for each product. However, please be aware that potential logistical challenges may cause delays. Customers will be promptly notified of any changes to the shipping schedule.
2. Normal Orders
| Shipping Method |
Shipping Time |
Shipping Method | Costs |
|
Standard Shipping |
Estimated 5 - 8 bussiness days | USPS, UPS, FEDEX | $15.99 Free Shipping - Order over $99 |
Note: SUNSEEKER orders are shipped to the contiguous United States (not including outlying islands and overseas territories such as Alaska, Hawaii, Puerto Rico and Guam).
Shipment Confirmation & Order Tracking
You will receive a shipment confirmation email once your order has shipped containing your tracking number(s). The tracking information will be updated within 48 hours.
If your tracking information has not been updated within 10 business days, please contact support@sunseekertech.com.
Shipping Information
Please make sure all the shipping information you provide to us is correct. We are not responsible for any losses, including missing parcels, package damage, losses as a result of delay, and other losses caused by incorrect shipping information that customers have provided.
We do not ship to a P.O. Box or APO/FPO/DPO addresses.
Damages
If you received your order damaged, please contact Sunseeker Support within 5 business days at support@sunseekertech.com.
We are not responsible for any losses, including missing parcels, package damage, losses due to the delay, and other losses caused by the shipping carrier. However, we will help you contact the responsible shipping carrier. Please save all packing and the damaged goods, as they may be required for filing a claim against the shipping carrier.
Return and Refund Policy
Please refer to our Return & Refund Policy for returning your order.
Shipping Support
For order and shipping-related inquiries, please contact us at support@sunseekertech.com.
For return requests and instructions to return any products, please contact Sunseeker Support at support@sunseekertech.com.
Return & Refund Policy
Cancellation
We accept order cancellations before the product is shipped.
We cannot cancel the order if the product is already shipped out.
Returns (if applicable)
We accept product returns. Customers have the right to apply for a return within 30 calendar days after delivery of the product. Subject to the following return conditions:
- Return Conditions
30-Day Unopened Returns: If the robotic lawn mower remains unopened, you may return it within 30 days of receipt. The product must be in its original packaging, unopened, and include all components without any signs of tampering or damage to the packaging. Once opened, returns will no longer be accepted unless the item is faulty or incorrect.
Faulty or Incorrect Items: If you receive a robotic lawn mower that is faulty or incorrect, please contact our customer service team immediately for assistance. We will provide guidance on returning or exchanging the product.
- Return Process
Our customer service team will determine whether your order is eligible for return. After confirming your order is eligible, you will receive instructions on how to properly pack the products and return them to us. Please confirm the return address before sending back, and make sure all components are included in the package.
- Shipping fees
If the return is caused by the consumer, the consumer should be responsible for the shipping fee. The specific fee should be based on the express company you choose.
If the goods received are damaged or incorrect due to our reasons, the consumer is not required to bear the shipping fee for this reason.
If the machine fails to operate correctly due to improper settings by the user or failure to follow the operating instructions, the customer will be responsible for any associated shipping costs, as outlined in our policy.
Refunds (if applicable)
After you have returned the product to our warehouse and provided us the shipping information, we will issue a refund within 5 business days. You will be notified by email when your order is refunded. If you have not received the refund after 5 business days, please contact us at support@sunseekertech.com.
Late or missing refunds (if applicable)
If you have not received a refund yet, first check your bank account again, then contact your credit card company. It may take some time before your refund is officially posted. Next, contact your bank. There is often some processing time before a refund is posted. If you have done all of this and you still have not received your refund, please contact us at support@sunseekertech.com.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Self-driving-level mowing for real, complex yards
Best Fit:
• Shaded yards with mature trees and canopy cover
• Narrow passages between flower beds and tight garden paths
• Homeowners who want a wire-free LiDAR robot lawn mower
• Multi-zone residential lawns up to 0.25 acre
AI That Sees Your Yard — Fully Wireless, Even Under the Trees
The S4 is an AI robot lawn mower that maps and mows your yard entirely on its own — even under a dense tree canopy where GPS-based mowers lose signal. 3D LiDAR builds a precise map of your lawn while Vision AI reads the path ahead in real time. It's completely wireless — battery-powered with no power cord and no cables trailing across the grass; it runs by itself and returns to the dock to recharge. And because it actually sees what's ahead, it slows and steers around the hoses, toys, planters, and flower beds most yards are full of.
Stays Accurate When Real Life Happens
Backed by nearly 15 years of outdoor power equipment manufacturing experience—engineered to cut like a lawn tool brand, not a gadget.
Handles 42% (22°) slopes, crosses 31.5 in / 80 cm narrow passages, and manages up to 100 zones across 5 maps.
LiDAR-led 3D mapping + systematic routes help S4 stay predictable in the yard you actually have—trees, edges, tight runs, and day-to-day clutter.
Create virtual boundaries, No-Go zones, and channels in the app—change them anytime without digging up your lawn.
Self-driving-level Navigation
Most mowers say “smart navigation.” What matters is whether it stays confident when your yard stops being a showroom.
Obstacle Avoidance
3D obstacle avoidance designed for daily life
Yard life changes every day, with kids' toys, hoses, furniture, and pets. The S4 robot lawn mower with LiDAR combines 3D LiDAR sensing and vision-based detection to avoid common obstacles and keep mowing.
Cut Quality Matters
Sunseeker is a newer consumer brand, but the team behind S4 is backed by nearly 15 years of outdoor power equipment manufacturing experience—and that shows in the cut.
TOTAL CONTROL IN YOUR POCKET
Create up to 100 separate zones across 5 maps. Assign unique schedules, cutting patterns, and priorities to each zone. This is useful when your front and back lawns connect only through narrow passages between flower beds.
Runs on its own—no constant checking
Proven through real-world tests—from auto-mapping to obstacles, slopes, and daily operation. No demos. No shortcuts. Just real yards.
What's in The Box
FAQ
How much range can Lidar detect?
How much range can Lidar detect?
The mower can detect 70 degrees vertically and 360 degrees horizontally
Is it possible to cut to the edge? What is the minimum distance from the edge?
Is it possible to cut to the edge? What is the minimum distance from the edge?
The mower cutting motor is centrally mounted, and for safety reasons, there is a distance of 110mm between the blade and the housing. During the process of edge mowing, this part of the grass cannot be cut
Can the mower work in the rain or fog?
Can the mower work in the rain or fog?
Lidar mower cannot function properly in rainy and foggy weather. When it rains or foggy, the light hits raindrops or water droplets and they will return, which leads to inaccurate distance measurement and does not match the map stored in the mower. Because the mower is equipped with a rain sensor, it can detect rainy or foggy weather. At this time, it is recommended to charge the mower at a charging station.
Whether the mower can work at night?
Whether the mower can work at night?
Because the Lidar mower actively emits light and can detect objects even at night, it can still work at night.
How efficient is the machine at cutting?
How efficient is the machine at cutting?
At cutting spacing and mowing speed, the mower can cut 187m2/h under test conditions. Different testing environments may result in differences in data.
What scenarios can a Lidar mower handle?
What scenarios can a Lidar mower handle?
- If there are reference objects on all four sides of the garden, due to the limited detection range of lidar, the machine is only suitable for gardens with a single direction not exceeding 50m.
- If the garden has only two reference sides, then the mower only supports gardens with a single direction less than 25m, and the height of the reference objects needs to be higher than 2.5m. If trees are planted or fences are added on both sides without reference objects in this scenario, the supported distance will be the same as in the above scenario.
- Scenario like the one below, which only have a reference side in a single direction, are completely unsuitable for a Lidar mower.
Is it possible to cut to the edge? What is the minimum distance from the edge?
Is it possible to cut to the edge? What is the minimum distance from the edge?
The mower cutting motor is centrally mounted, and for safety reasons, there is a distance of 110mm between the blade and the housing. During the process of edge mowing, this part of the grass cannot be cut.
Can the mower work at night?
Can the mower work at night?
Yes, it supports night mode as it actively emits light for object detection.
How much range can Lidar detect?
How much range can Lidar detect?
The mower can detect 70 degrees vertically and 360 degrees horizontally.
Is the mower usable in rainy or foggy weather?
Is the mower usable in rainy or foggy weather?
No. Raindrops/fog affect distance measurement, and the rain sensor will trigger it to return to the charging station.
What’s the minimum distance from the edge the mower can cut?
What’s the minimum distance from the edge the mower can cut?
110mm (due to safety design, the blade is centrally mounted).
How long does it take to charge and mow per cycle?
How long does it take to charge and mow per cycle?
Charging time: 80 minutes; Mowing time per charge: 90 minutes
How efficient is the machine at cutting?
How efficient is the machine at cutting?
At cutting spacing and mowing speed, the mower can cut 187m2/h under test conditions. Different testing environments may result in differences in data。
What does the error code on display and error message on APP mean?
What does the error code on display and error message on APP mean?
Please refer to the user manual, which provides code explanations for troubleshooting. At the same time, you can also contact our after-sales support with the following information:
For Sunseeker: 1-833-822-0146
Mon-Sun: 9 AM -9 PM(EST)
support@sunseekertech.com
What kind of yard is S4 suitable for?
What kind of yard is S4 suitable for?
Sunseeker S4 Built for Real, Complex Yards-not ShowroomsLawn Size: Less than the maximum mapping area of 0.25 Acre (10,890 ft²).Slope Check: Slopes under 42% (22°).Grass Type: Not compatible with Zoysia or St. Augustine. Lawn height must be under 9 cm (3.5 in).
Can I return the mower after opening it?
Can I return the mower after opening it?
If the product is faulty or incorrect, our support team willassist with return or exchange. For yard-fit or setupconcerns, contact us first so we can help you confirm the right model and setup path.
What costs less long-term: mowing yourself, hiring help, or owning a robot mower?
Pick how you mow today. We'll show break-even and long-term savings with a Sunseeker robot.
Choose your Sunseeker mower
Hiring Cost Details
2y 1mo
to break even
$3,901
Save over y
Avg: $65/mo
Hiring service
$6,600
Mower cost
$2,699
Cumulative Cost Over Time
Red line: Average Monthly Cost. Longer use means lower cost per month.