• 【Hidden Tracking Protection】Concealed installation design keeps your tracking device completely hidden under the bike seat, providing high security and anti-theft protection with specialized tools required for removal.

• 【Dual Safety Function】Combines reflective tail light for enhanced nighttime visibility with secure tracking device mounting, offering both riding safety and theft prevention in one device.

• 【Waterproof Design】Features rubber sealing ring to prevent water ingress during daily use, ensuring reliable performance in various weather conditions.

• 【Universal Compatibility】Compatible with bike seats having saddle rail spacing between 45-55mm, with adjustable installation angles to fit different seat curves.

• 【Unique Black Hole Appearance】Distinctive visual design breaks conventional aesthetics, making your bike stand out while maintaining stealth functionality.

Specifications:

• Material: Black Engineering Plastic + Honeycomb Reflective Film + Rubber Sealing Ring
• Product Dimensions: 49.3mm x 58mm x 8.8mm
• Main Body Width: 45mm
• Total Width: 58mm
• Total Length: 49.3mm
• Reflector Diameter: Φ38.8mm
• Thickness: 8.8mm