1. Material: Plastic
\n2. Size: 22*17*1.2mm; Weight: 2g
\n3. Bluetooth version: 5.0 dual mode
\n4. Solve the problem that the computer does not have Bluetooth function, and support multi-device connection (speakers, earphones, keyboard and mouse, printers, etc.)
\n5. System compatibility: Windows7/8/10, Linux and other operating systems
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