---
title: "Sunseeker S4: specs and what the maker claims"
description: "Sunseeker S4 robot mower: claims lawns up to 10,800 sq ft, slopes up to 42%, no boundary wire, list price $1,599. The maker's claims, not our tests."
canonical: "https://homerobotcompared.com/robot-mowers/sunseeker-sunseeker-s4"
brand: "Sunseeker"
category: "Lawn mowers"
updated: "2026-10-09"
data_snapshot: "2026-10-07"
---

# Sunseeker S4

Lawn mower by Sunseeker, released 2026. Every figure below is what the maker claims, collected 2026-10-07. We have not tested this robot.

List price (the maker's, not a store's price today): $1,599.

## Lawn and slopes

| Item | Value |
| --- | --- |
| Lawn size it can handle | 10,800 sq ft (1,000 m²) |
| Slopes | Up to 42% |
| Size group | large |

## How it finds its way

| Item | Value |
| --- | --- |
| Guidance | Laser and camera guidance |
| Boundary wire | No |
| Wire-free | Yes |
| Needs a base station on the lawn | No |

## Cutting

| Item | Value |
| --- | --- |
| Cutting width | 18 cm |
| Cutting height | 20 to 60 mm |
| Drive | rear-wheel drive |

## Battery, noise and weather

| Item | Value |
| --- | --- |
| Battery | 20V 4Ah |
| Noise | 60 dB |
| Water resistance | IPX6 |

## Connection and smart home

| Item | Value |
| --- | --- |
| Connection | Wi-Fi/Bluetooth (4G optional) |
| Smart home | Alexa; Google Home |

## Where it is sold

| Item | Value |
| --- | --- |
| United States | Yes |
| United Kingdom | Yes |

Well sourced. Source: https://sunseekertech.com/global/s4/specs

Notes: US launch 3 Mar 2026 at 1599 (press); shop compare-at 1799.99 sale 999.99; 42% = 22deg

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- [Ecovacs GOAT O1000 LiDAR PRO](https://homerobotcompared.com/md/robot-mowers/ecovacs-goat-o1000-lidar-pro.md)

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Web page: https://homerobotcompared.com/robot-mowers/sunseeker-sunseeker-s4