[Best compatible Bluetooth 4.0 chip]-Compatible with more than 99% Bluetooth devices. Connect iPad 10.2 2019, iPad 9.7 inches 2018, iPad 9.7 2017, iPad Pro 12.9 inches / 11.0 inches / 10.5 inches / 9.7 inches, iPad Air 10.5 / Air 2, iPad mini 5/ 4, 11 Pro Max, 11 Pro, 11, Xs Max, etc. PC, pro air 2012/2017/2018/2019 laptop, laptop, OS; support Win7 Win8 Win10 Linux OS X or Android tablet Comfortable Contact and ultra-thin design: symmetrical and ergonomic design makes this wireless Bluetooth mouse suitable for left and right hands. Excellent surface coating technology brings you a Contact like skin. Ultra-thin and portable, the mouse can be used anytime and anywhere during travel. Very suitable for use at work/study/play. Mute click and adjustable DPI: The special silent design of the left and right buttons allows you to focus on work or playing games without disturbing others. Switch between DPI levels 800, 1200 and 1600 to meet your needs with high precision. Advanced optical tracking technology ensures greater sensitivity and can accurately track on various surfaces. Rechargeable and saving Erengy: The mouse has a built-in rechargeable battery with a charging cable. No need to replace the battery. In order to save power and long-term use, the mouse will automatically enter sleep mode after 11 minutes of inactivity, just click any button to wake it up. How to use a Bluetooth mouse: turn on the mouse switch, open the computer system preferences, and turn on the Bluetooth function. When the computer Bluetooth shows that it is searching for nearby Bluetooth devices, you need to hold down the "black button" at the bottom of the mouse and hold down 3-6 Seconds, then your computer will display the Bluetooth mouse when searching for the device, then click to connect it, and then successfully connect Howto update the software version? (Open iPad settings and click General to find the software update function) Click Download to install the latest version of iOS 13) The Bluetooth connection of the iPad or is different from that of the laptop. First, open the iPad settings, find the auxiliary function, open the Contact control, find the assistive Contact control, open the assistive Contact control, open the assistive Contact control, then pull down to find the pointing device, turn on the Bluetooth device, then turn on the mouse switch, and press the button at the bottom of the mouse The black button for 3-5 seconds, your iPad will search for Bluetooth mouse devices, and then click "Connect". Enter the pairing password: 0000 (If you cannot find the Bluetooth mouse device, restart the mouse or iPad Bluetooth function, or restart and refresh to find the Bluetooth mouse device.) colour: white Material: ABS size: 114x58x20mm Package Contents: 2 x wireless mouse 2 x charging cable (Note: upgrade the system to iPadOS 13 and iOS 13 or later, and turn on "Assistive Contact") Only the above package content, other products are not included. Note: Light 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.