SPECIFICATIONSBattery Included: NoBrand Name: MaerknonCertification: CEChoice: yesDPI: 2000Feature 1: wireless mouse bluetoothFeature 2: wireless mouse adjustable DPI levelsFeature 3: wireless mouse for laptopFeature 4: 2 4ghz wireless mouseFeature 5: wireless mouse ergonomicFeature 6: wireless mouse gamingFeature 7: Desktop mouse mice mauseFeature 8: Mouse recarregavel sem fioGross Weight: 80Hand Orientation: Both HandsHigh-concerned chemical: NoneInterface Type: USBNumber of Buttons: 4Number of Rollers: 1 pcsOperation Mode: Opto-electronicOrigin: Mainland ChinaPackage: NoPower Type: RechargeableType: 2.4Ghz Wireless Specification: Type: 2.4G Optical mouse Mouse Size: mouse ( 120mm) Computer connection: wireless Applicable models: desktop Photoelectric resolution: 1600dpi (dpi) Number of keys: 6 (keys) Interface: USB Wireless transmission frequency: 2.4ghz Whether to support ergonomics: support Adjustable resolution: six gears Operating distance: 10 (m) Working method: Optical Wheel direction: four-way wheel