NOTE: Thank you very much for your purchase. If you are not satisfied with the product or service, please send an email to contact us, I believe we can give you a satisfactory answer soon, thank you! Name: Arc Touch Wireless Bluetooth Mouse Color: Black Scrolling Type: Touch Scroll Connection style: Bluetooth 3.0 Mouse Size: 126.5*56.5*16.5 mm Power Supply: 2*AAA battery (not included) Weight: 45g Application: PC,Laptop,Notebook,Tablet,phone Wireless transmi ssion distance: ?10m Wireless carrier frequency: 2404MHz 2480MHZ. Wireless work channel: 16 channel,Automatic frequency hopping. Rated Operating Current: 8-15MA@1.5V/3V. The key stroke:0.8mm. The strength of button: 60-7010g Buttons life: 3 million times. Type : Bluetooth Wireless Operation Mode : Opto-electronic DPI : 1200 Style : 3D Style : Mini Style : Finger Number of Rollers : 0 Hand Orientation : Left and Right