Style: Seatpost Mount 【Optimal for Anti-Theft! Discreet AirTag Bike Mount】The "Stealth AirTag Bike Mount" features a design indistinguishable from a standard bicycle reflector, completely concealing a GPS tracker (AirTag sold separately) from thieves. Track your bike's location in real-time using Apple's "Find My" network. Perfect for cyclists with high security awareness. 【Off-Road Compatible! Rugged GPS Mount】Features an aircraft-grade aluminum base and industrial-grade stainless steel screws. Durable design withstands the shocks and vibrations of off-road riding, ensuring no slippage or dropping on any road conditions, including mountain bikes, electric assist bikes/MTBs, and electric scooters. 【No Signal Interference! High-Precision Location Tracking】The AirTag bike mount, equipped with an aluminum base and an ABS shielding compartment, stably receives GPS signals. Enables accurate tracking even in rain and storms. 【Safe Night Riding! High Reflectivity】Functions as a lightweight yet highly reflective reflector, improving visibility at night. Easily recognized by drivers while maintaining a simple appearance. 【Fits Most Bikes! Easy Installation】Includes 4 size spacers: 22.2mm/25.4mm/28.6mm/31.8mm, widely compatible with road bikes, cross bikes, gravel bikes, MTBs, and electric scooters. Easily mounts to the saddle post or handlebars. 【Gar-min Varia Compatible! Dual-Function Design】Allows for the installation of a Gar-min Varia radar light (RTL510/RVR315/RTL51 model) instead of the standard reflector. Simultaneously achieves "rear vehicle detection + anti-theft" during group rides and solo rides!