• Multi-Mode Connectivity: wireless mouse switches between 2 devices via BT5.0/BT3.0/2.4GHz. Compatible with laptops/tablets/MacBooks, realizes free switches between 2 devices(with Bluetooth mode and 2.4G mode) in a switch button on the computer mouse wireless.

• 2 in 1(Bluetooth+2.4Ghz USB) Connection Options: Use Bluetooth (Windows/macOS/Android) or 2.4GHz USB receiver. Store adapter in mouse, and no WiFi support

• Dual-Device Control: Switch between laptop/tablet instantly. MacBooks require Bluetooth (no USB port). Supports control 2 devices(one with usb-a, one with bluetooth), without the trouble of plugging and pairing

• Customizable DPI: 6 adjustable levels (800/1200/1600/2400/3200/4000). Tru-Wave tracking works on most surfaces. Plug-and-play with Nano receiver storage (stored in the back of the wireless mouse for laptop)

• Ergonomic Build: Contoured design for comfort. 10 million times click durability. Compact size for travel. Computer mouse wireless is not ideal for large hands.

• Smart Features: Auto-sleep extends battery (18 months, 2 AA required). Back/Forward buttons make moving quickly forward or back between documents or browsing websites a breeze (Windows/Android only, Mac not suitable)

• Warranty & Note: 36-month warranty with registration. Troubleshoot via battery replacement/LED indicators (green=2.4G, blue=BT). (247 characters). No USB-C support and not rechargeable, iPad shows round cursor, Mac disables side buttons.

• Usage Reminders: Audible clicks(not silent). Sleep mode activates after 10min (double-click to wake). Windows 7/XP note: Manual driver install required for USB adapter. Contact the seller for damaged/missing parts.

• 2.4G Mode: Insert batteries → Toggle switch to 2.4G (green LED) → Plug receiver into USB-A → Press any button to connect

• Bluetooth Mode: Insert batteries → Toggle to BT mode (blue LED) → Hold pairing button 3s → Enable device Bluetooth → Search "BM20X-3.0" or "BM20X-5.0" → Connect