Why buy the Segway Navimow X390E 9″ Robotic Lawnmower?
- Recommended for large and complex lawns up to 10,000 m².
- EFLS 3.0 positioning with 3-frequency RTK for centimetre-level accuracy without perimeter wires.
- Advanced VisionFence technology with a 300° camera system for superior AI-powered obstacle avoidance.
- Effortless wire-free setup using the Navimow app and AI Assist Mapping.
- Excellent climbing performance, easily handling slopes up to 50% (27°).
- Ultra-quiet operation at just 60 dB(A), ensuring minimal disturbance.
An Effortless Solution for Large, Complex Lawns
The Segway Navimow X390E represents a new era in automated lawn care, specifically engineered for large and intricate gardens up to 10,000 m². This model eliminates the need for physical boundary wires, offering a clean, hassle-free installation and operation. Its advanced technology ensures a consistently perfect cut, allowing you to reclaim your time and enjoy a pristine lawn without the effort. It is the ideal choice for homeowners with extensive grounds, commercial properties, or anyone seeking the pinnacle of robotic mowing technology.
EFLS 3.0: Precision Positioning, Extended Signal Coverage
At the heart of the Navimow X390E is Segway’s state-of-the-art EFLS 3.0 (Exact Fusion Locating System). This system features major upgrades in RTK coverage, VSLAM (Visual Simultaneous Localisation and Mapping), and VIO (Visual Inertial Odometry) technology. The in-house designed RTK module supports triple-frequency observation, boosting satellite capacity by 40% and delivering centimetre-level accuracy. This ensures unparalleled stability and precision, even in challenging signal environments like gardens with tall trees or buildings, for flawless operation in complex settings.
VisionFence: AI-Powered Obstacle Avoidance
Safety and intelligence are paramount with the upgraded VisionFence technology. The Navimow X390E is equipped with an unprecedented 300° field-of-view camera system, utilising four camerasāone on the left, one on the right, and two on the front. One of the front cameras is a 3D Time-of-Flight (ToF) sensor. This hardware, coupled with efficient AI route planning, enables unmatched and highly reliable obstacle avoidance. The mower can intelligently identify and navigate around garden furniture, toys, pets, and wildlife, providing extra safety and peace of mind.
Powerful Performance on Challenging Terrain
The X390E is built to handle more than just flat lawns. The built-in hub motors have seen a 25% power increase, enhancing the mower’s ability to conquer challenging conditions with ease. It can confidently manage slopes of up to 50% (27°), ensuring versatile and consistent performance across varied terrains. The newly-developed 6-blade, anti-clogging cutting disc ensures a better, more consistent cut with less time needed for cleaning.
Wire-Free, Worry-Free Setup
Setting up the Navimow X390E is remarkably simple. Using the Navimow app, the AI Assist Mapping feature allows the mower to automatically navigate and map the entire work area. In just a few taps, users can establish virtual boundaries, mark off-limit areas like flowerbeds, and create safe channels to connect multiple zones. The unique Antenna Location Finder further simplifies setup by analysing signal strength to recommend the optimal placement for the charging dock and antenna, ensuring reliable performance.
Advanced Features for Security and Convenience
The X390E offers four advanced security features, including outside-of-boundary alarms and lift alerts. Integrated GPS tracking allows you to find the mower’s location easily via the app, with a secret compartment available for an additional tracker. For ultimate convenience, the mower is compatible with Alexa and Google Home, allowing you to manage mowing schedules with simple voice commands. All this is achieved with ultra-quiet operation at just 60 dB(A), making it no louder than a home air conditioner.
Authorised UK Segway Navimow Dealer
As an authorised UK dealer for Segway Navimow, Sims Garden Machinery provides a level of service that online-only retailers cannot match. For a complex, high-value machine like the X390E, we strongly recommend professional installation to ensure it performs at its best from day one. For local customers, our trained sales staff are on hand to provide expert advice, and we can offer a free, no-obligation on-site survey of your garden to assess suitability. Our dedicated workshop is staffed by trained mechanics who can handle the installation, setup, and any future servicing needs. You can view this machine in our Stratford-upon-Avon showroom, where you can buy with complete confidence.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Basic Information | |
|---|---|
| Recommended Mowing Area | 10,000 m² |
| Dimensions (L x W x H) | 698 x 550 x 307 mm |
| Net Weight (Battery Included) | 19.90 kg |
| Material | Mower frame: PC+ASA |
| Mower Parameters | |
| Typical Mowing Time Per Full Charge | About 240 min |
| Area Capacity per Hour | About 350 m² |
| Cutting Width | 23.7 cm (9.33 in) |
| Cutting Height (UK) | 20-70 mm |
| Cutting Blades | 6 |
| Cutting Height Adjustment | Electronic |
| Cutting Disc | Anti-clogging cutting disc |
| Charging Time | About 100 min |
| GNSS Working Mode | GPS, Beidou, Galileo |
| Working Conditions & Ratings | |
| Working Temperature | 0-40°C (10-35°C recommended) |
| IP Rating | IP66 (Mower, Charging Station, Power Supply) |
| Max. Incline Inside Working Area | 50% |
| Max. Incline at Boundary | 25% |
| Connectivity | |
| Wi-Fi | 2.4 GHz / 5.0 GHz |
| BluetoothĀ® | Yes |
| Cellular Network | LTE-FDD/LTE-TDD (UK/EU Bands) |
| Motors & Battery | |
| Driving Motor Type | Geared hub motor |
| Blade Motor Type | Brushless motor |
| Battery Type | Lithium-ion |
| Nominal Capacity/Energy | 12.8 Ah / 277 Wh |
| Battery Management System | Over-heating, short circuit, over-current, and over-charge protection |
| Noise Emissions | |
| Measured Sound Power Level LWA | 60 dB(A) |
| Sound Pressure Level LpA | 52 dB(A) |
Why buy from Sims Garden Machinery?
Authorised main dealer
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
Real people, real support
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Expert advice ā not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how youāll actually use the machine.

Established, independent family business
Weāre a long-standing independent dealer with deep roots in the local area ā built on reputation, repeat customers, and word of mouth.
Frequently Asked Questions
What size lawn is the Segway Navimow X390E suitable for?
The Segway Navimow X390E is designed for large and complex residential or commercial lawns, with a recommended maximum mowing area of 10,000 square metres (approximately 2.5 acres).
Does the Navimow X390E require a boundary wire?
No, the Navimow X390E operates completely wire-free. It uses Segway’s advanced EFLS 3.0 positioning system, which combines RTK satellite signals and visual sensors to map your garden and create virtual boundaries with centimetre-level precision.
How does the X390E handle obstacles like garden furniture or pets?
The X390E is equipped with an upgraded VisionFence system. This uses a 300° field-of-view camera array, including a 3D Time-of-Flight (ToF) sensor, coupled with AI algorithms. It can intelligently identify and navigate around obstacles, providing extra safety for pets, wildlife, and people in the garden.
Can the Segway Navimow X390E manage a garden with slopes?
Yes, it is exceptionally capable on sloped terrain. The X390E’s superior design, featuring powerful built-in hub motors, allows it to handle inclines of up to 50% (or 27°) within the main working area, making it suitable for even the most challenging gardens.
As a Segway Navimow UK dealer, what support does Sims offer?
Sims Garden Machinery provides comprehensive support. Our trained sales staff can advise if the X390E is right for you, and we offer free on-site surveys for local customers. For a perfect setup, we highly recommend professional installation by our trained mechanics, who ensure optimal performance from day one.













Reviews
There are no reviews yet.