【Universal Compatibility】Compatible with DJI Action 4/5 Pro/6, GoPro Hero 9/10/11/12/13, Insta360 X3/X4/X5, and smartphones running iOS, Android, or HarmonyOS systems. 【Three-Button Control Design】Features A, B, and S buttons for comprehensive camera control including power on/off, recording start/stop, photo capture, tagging, and mode switching. 【Bluetooth-compatible 5.3 Connection】Advanced Bluetooth-compatible 5.3 technology provides stable wireless connection up to 15 meters for reliable remote operation. 【Ultra-Portable Design】Compact oval shape and weighing only 8.5g, perfect for mounting on wrists, handlebars, steering wheels, or backpacks. 【Long Battery Life】Built-in 55mAh lithium polymer battery provides up to 2 months standby time with Type-C charging interface for convenient power management. Specifications: Model: D09 Material: ABS Shell + Electronic Components Signal Transmission Mode: Bluetooth-compatible 5.3 Power Supply Type: 55mAh Lithium Polymer Battery Remote Control Distance: 15m Number and type of buttons: 3 Buttons (A, B, S) Product Dimensions: 45.5mm x 21.7mm x 13mm Charging Interface: Type-C Charging Voltage: 5V Standby Time: Approximately 2 months Button Lifespan: 50,000 press cycles Compatible with: DJI: Action 4/Action 5 Pro/Action 6 GoPro: Hero 9/10/11/12/13 Insta360: X3/X4/X5 Compatible Mobile Phone Systems: iOS, Android, HarmonyOS