Item Type: Wireless Mouse  Material: Aluminium Alloy and ABS BT Version: 4.0 Wireless Frequency Band: 2.4 to 2.48GHz Wireless Distance: 10m / 10.9yd Color: Silver Voltage: 5V Rated Working Current: ≤10mA DPI: 800, 1200, 1600 DPI Battery Type: Lithium Battery Battery Capacity: 450mAh (Inbuilt) System Requirements: Suitable for Window, for Android, for OS X 1、Metal Shell: This wireless mouse adopts the aluminium alloy shell with exquisite texture, which ensures high toughness and durability.  2、Free Control: With this wireless mouse, you can freely switch and control two devices, from desktop to tablet, from laptop to for OS X.  3、Portable Size: This wireless mouse with ergonomic design is small and lightweight, you can take it to wherever you want.  4、Rechargeable Battery: Inbuilt 450mAh rechargeable lithium battery, 500 hours continuous use after fully charged, automatic sleep mode and wakeup mode.  5、Wide Compatibility: Suitable for Window, for Android, for OS X. 4GHz is suitable for laptop, desktop and any devices with USB interfaces.