High-concerned chemical : None<br>Power Type : Rechargeable<br>Number of Rollers : 1 pcs<br>Hand Orientation : Both Hands<br>Package : Yes<br>Style : DPI adjust button<br>DPI : 1600<br>Battery Included : Yes<br>Type : Bluetooth Wireless<br>Brand Name : OBAME<br>Origin : Mainland China<br>Power Source : Rechargeable<br>Operation Mode : Opto-electronic<br>Certification : CE<br>Number of Buttons : 4<br>Connection Mode : Bluetooth + 2.4G<br>Brand Name : S219<br>Product Name : Bluetooth Mouse/2.4G Wireless Mouse/Transparent Mouse/Silent Mouse/Rechargeable Mice<br>Compatible system : Windows Android Mac OS<br>Feature 1 : 2.4G Wireless Mouse<br>Feature 2 : Gamer wireless mouse<br>Feature 3 : Silent Mouse<br>Feature 4 : Bluetooth mouse<br>