Features:WIDE RANGE OF USE You can use this remote control to swipe-short video software, take pictures with your mobile phone, read novels, read comics, etc.RING-SHAPE: Ring-style design, small size, light weight, easy to wear on the finger, ergonomic design, will not fall off, use will not be tired.Premium: The video controller adopts plastic, which is safe and skin-friendly, ergonomic rings design, and comfortable and beautiful to wear.When remote control is used with a mobile phone or other BT device for the first time, it must be connected first.Say goodbye to sore hands and cramped fingers: Our Multifunction Vibrating remote control truly lets you release both hands and enjoy your favorite medias in comfort. Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurement Description:Material: ABSBT version: 5.3Transmission frequency: 2.4GHz-2.4835GHzBT transmission distance: more than 6 metersStandby time: about 1 monthBattery capacity: 50 mAhInput power: DC-5VAccessories: Data cable*1 Package List:1X Remote Control Rings