Mobile Bluetooth Ring Controller

Mobile Bluetooth Ring Controller
Bluetooth: 5.1
Shell material: Environmentally friendly ABS plastic
Inner diameter of rubber ring: 19.5/21.5/23.5mm
Overall dimensions: 25x23x35mm
Remote control range: Up to 10 meters
Battery: Built-in lithium battery
Battery capacity: 30mAh
Continuous operation time: 8 hours of continuous use
Standby time: 100 hours