Multifunctional smart phone Bluetooth remote control Remote control for selfies, video playback, liking videos, and turning pages in e-books or comics Bluetooth connectivity, one-key return, dual-mode operation, remote lock screen, and remote selfie function 10-meter operating range, swipe freely and keep your hands free Ergonomic ring design, comfortable to wear, reduces fatigue, enables easy scrolling through videos or reading content Dual-mode operation: short video mode and cursor mode One-key return function allows quick return to the home screen One-key remote lock screen – lock your device without touching it Remote shutter function for taking photos from up to 10 meters away, no assistance needed Remote page turning for faster reading experience Compatible with most e-book apps and websites that support left and right page navigation Up to 72 hours of continuous use with intelligent power management chip for low power consumption Bluetooth version: V5.3 Input power: DC-5V Battery capacity: 50mAh Usage time: approximately 72 hours of continuous use Supported apps: compatible with mainstream applications Color: Black Material: Plastic Package Contents: 1 x Bluetooth wireless remote control Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual product. Measurement error allowance: +/- 1-3 cm.