Suitable for GoPro Hero 4 / 3+ / 3 / 2 / 1. Handheld monopod, length can be adjusted; Anti-slip design, iOS / Android system compatible; Wireless Bluetooth selfie shooting, focus control; Bluetooth version: v3.0; Effective distance: Within 10m; Working frequency: 2.4GHz; Working voltage: 3V~4.2V; Rechargeable 100mAh lithium polymer battery; Working humidity: -10'C~55'C; Working humidity: 10~70%