?Built-In 500mah High Quality Rechargeable Battery . When You Leave Your Mouse More Than 5 Minutes, It Will Automatically Get Into Sleep Mode Which Saves Electricity Of The Mouse, And Click Any Button For Waking Up The Mouse Again . The Mouse Will Enter Low Energy Mode Once The Battery Voltage Is Lower Than 3.3v And Shows A Red Light Indication From The Scroll Wheel. Furthermoer, It Will Automatically Turn Off Once The Battery Voltage Is Lower Than 3.0v And You Need To Recharge The Battery. ? Silent Click: Silent Clicking Design For Left And Right Button Fits The Circumstance For Using The Mouse In Public, Such As Library, Dormitory, Office And So On, And Apart From Blue Light Indication During Recharging And Light Off After Full Recharge, This Design Results Worry-Free For Disturbing Others. ? Ergonomic Design: The Bluetooth Mouse Is Designed For Right-Handed User For The Best Hand Feeling. Six Efficient Buttons And Three Adjustable Dpi Level (1000/1200/1600) That Allow You To Freely Control The Mouse Speed. ?Tri-Mode Connection: Inphic Bluetooth 5.0/3.0 And 2.4g Usb Connection. You Can Switch To Any Mode By Clicking The Mode Switch Button Located At The Bottom Of The Mouse. The Indication Lights Of Bluetooth 5.0, Bluetooth 3.0 And 2.4g Usb Are Green, Blue And Red, Respectively. Once You Complete The Pair Of Bluetooth Or Insert The Usb, You Can Freely Switch To Each Mode And The Maximum Operating Distance Of Each Mode Is 10 Meters. ? 1-Year Warranty: 45-Day Unconditional Refund And 12 Months Repairing Warranty. It Is Compatible With Windows 7/8/10/Xp, Vista And Mac Os System. Meanwhile, The Bluetooth 5.0 Is Compatible With Windows 8/10(But Not Windows 7 Or Xp), Android, Mac Os System; 2.4g Usb Connected Mode Support Any Usb Enabled Devices, Which Just Need To Simply Insert The Usb Receiver. P.S. Bluetooth 5.0 Supports Ios System For Both Ipad And Iphone, But The Ios System Has To Be Ios 14 Or Later Version.