1. 2.4GHz wireless technology, 20m long-distance connection
2. USB receiver, plug and play, compatible with multiple systems
3. Low-noise keys, do not disturb others
4. Ergonomic design, skin-friendly feel, non-slip and sweat-proof, comfortable to use
5. Optical IC: 3180C (matte) (new 8650)
6. Encoder: Fengshi 300,000 times
7. Return rate: R500
8. Power supply mode: dry battery (not included)
9. Key switch: mute 3 million times
