Description
Navihood B2 Expression Radar Laser Taillight
Rear-view radar. Custom LED display. Laser safety line.
The Navihood B2 combines intelligent radar detection, a high-visibility taillight, and a rear safety laser into one sleek, lightweight unit. Designed for riders who want advanced situational awareness without adding bulk to their bike.
Rear Radar Awareness
The integrated millimeter-wave radar detects vehicles approaching from behind up to 150 meters away, with a 45° horizontal detection angle. It can track up to eight vehicles simultaneously, automatically assessing threat levels and triggering visual alerts.
- Real-time vehicle detection
- Color-coded risk indication
- Brake alert when sudden deceleration is detected
Compatible with Navihood bike computers and most major GPS cycling computers via ANT+. Audio and visual alerts keep you informed without distraction.
High-Visibility Expression Display
A 234-dot dual-color LED matrix (red & yellow) allows you to display custom animations, symbols, or scrolling messages. Personalize your ride through the Navihood App and share designs with other users worldwide.
- Custom animated expressions
- Scrolling text for group ride communication
- Turn-by-turn synchronization with supported Navihood computers
Integrated Laser Safety Line
A rear-facing laser projects a visible boundary line behind your bike to increase rider presence on the road. When a vehicle approaches at a potentially unsafe distance, the laser flashes rapidly to increase visibility.
Long Battery Life
Powered by a 1500mAh battery and optimized low-consumption LED + radar system, the B2 delivers up to 17 hours of runtime with radar, laser, and expression display active.
- Up to 17 hours (Radar + Laser + Display active)
- USB-C charging
- Auto on/off
Durable & Weather-Ready
- IPX7 waterproof rating
- Operating temperature: -20°C to +60°C
- Break-resistant aluminum alloy mounting base
The rotary mounting system allows quick installation and removal. Securely attaches to O-shaped, D-shaped, and aero seatposts using the included mounting hardware and elastic rubber straps.
Connectivity
- Bluetooth 5.0 (custom protocol)
- ANT+ radar compatibility
- Navihood App integration
- Compatible with most major bike computers
Note: The B2 can connect to either the Navihood App or a cycling computer at one time.
Technical Specifications
| Model | B2 |
| Brightness | 50 lumens |
| LED Display | 234-dot matrix (Red & Yellow) |
| Radar Detection Range | Up to 150 meters |
| Detection Angle | 45° horizontal |
| Max Vehicles Tracked | 8 |
| Battery Capacity | 1500mAh |
| Runtime | Up to 17 hours |
| Charging | USB-C |
| Water Rating | IPX7 |
| Operating Temperature | -20°C to +60°C |
| Weight | 72g |
| Dimensions | 98 × 39 × 19 mm |
In the Box
- Navihood B2 Radar Taillight
- Seatpost mount
- Saddle mount
- M4×12 screws
- USB-C charging cable
- Rubber rings
- Safety lanyard
- Quick start guide