・The structural design accords with the principle of ergonomics, and it is not tired after a long time of use ・The built-in software solution complies with the Bluetooth-compatible human interface device and complies with the Bluetooth-compatible SIG Bluetooth-compatible 2.0 version specification ・2.4G Wireless Connection: First take out the receiver at the bottom of the mouse, insert it into the USB port of the computer, and then plug it in After that, wait about 15 seconds to turn on the switch at the bottom of the mouse. You can use the ・Bluetooth-compatible Connection: When the switch is turned to the "BT" position, the blue light in the middle of the bottom of the mouse will flash, find the "BT key" key at the bottom of the mouse, press this key for 2 seconds, the blue light on the side of the roller will flash, at this time, the mouse will enter the pairing state, and the device will search BT5.2 "Mouse" click pairing connection, the connection is successful, and it can be used normally ・Rechargeable Long Endurance: It can be used while charging, without changing the battery, convenient and fast ・Key Mute Room Entertainment: Left and right noise reduction button design, comfortable environment, no impact on roommates and family Specifications: ・Built-in Lithium Battery: 400mAh ・Voltage: 3.7V ・Charging: 5V/1A charger charging ・Receiving Sensitivity: -75DBM (standard) ・Transmission Distance: 10m ・Working Environment: -10°C to 85°C ・Placement Environment: 0°C to 55°C ・Humidity: 20%-50% ・Support System: Windows98/ME/2000/XP/for VISTA Package included: ・1 x Mouse ・1 x Charging Cable ・1 x English and Chinese Manual ・Other items not included