M618ZD 400ODPI WIRELESS LEFTVERTICAL MOUSEHigh Precision. Dual Wirele Connection DELUX 4000DPI Wirele Left Vertical Mouse (ERGO VERTICAL S)Left Ergonomic VeritcalReduce hands preureHIGH PRESICIONUP TO 400ODPIHigh Precision Left Vertical Mouse Le movement, Le fatigueErgo Buttons Layout1.DPI BUTTON 2.BACKWARD 3.FORWARD 4.LEFT BUTTON 5.ScROLL WHEEL 6.RIGHT BUTTON 7.TYPE C PORT 8.INDICATOR LIGHT 9.ON/OFF 10.MODE sWITCH(1)2.4G WIRELESS(2)BT 4.0 7.TYPE C PORT8.INDICATOR LIGHT9.ON/OFF 10.MODE sWITCH(1)2.4G WIRELESS(2)BT 4.0 11.BLUETOOTH PARING BUTTON 12.USB NANO RECEIVERSilent Click DesignEnjoy the quietBuilt-in Rechargeable BatteryOne Full Charge For A Weeks Using (8 Hours/Days)Stable Dual mode ConnectionWith BT 4.0 and USB Receiver