Feature 1BT 4.0 Stable Connection: Once BT is turned on, it can be connected and used; It can be easily matched with electronic products to achieve stable operation. 2Low Power Consumption: This product is small in size, light in weight, and convenient for users to carry; Its body has low power consumption, long battery life, and can continuously work for 10h. 3Product Functions: This product can achieve 10m/393.70in remote control; It is easy to operate, with functions such as button click (next video), double click (like), quick press three times (previous video), and long press (take photos and record). 4Ergonomic design: This page turner is suitable for fingers of different widths; Its charging port faces outward and the indicator light is on the right, making it quick and convenient to use. 5Applicable to: This product supports the use of mainstream apps, such as various mainstream short video apps, beauty cameras, novel apps, etc; It brings convenience to users' lives.Item Type: Fingertip video controllerWeight: 21g/0.74ozMaterial: ABS, siliconeBT Version: BT 4.0Remote Control Distance: 10m/393.70inBattery Type: Polymer lithium batteryBattery Capacity: 20mAh (shipped with built in battery)Transmission Frequency: 2.4GHZ to 2.4835GHZFeatures: Video, reading, selfie remote control .Package List:1 x Fingertip Video Controller1 x USB Cable1 x InstructionNoteShipped with built in battery.