2X Wireless Scrolling Ring,Air Finger Ring Mouse with Touchpad,Bluetooth Scroller Remote Control B Size:48 x 48 x 32mm Weight:72g Connection Method:2.4G or Bluetooth Bluetooth Version:5.3 Ring Battery Capacity:40mAh Charging Case Battery Capacity:250mAh Charging Time:1.5 Hours Remote Control Ring Mouse Fingertip Magic Without Touching Your Phone (D06Pro USB version) Color: B: Black Material: plastic Package Contents: 2 x Ring Mouse 2 x Charging Case 2 x USB Receiver 2 x Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.