1. The bottom layer adopts thin film technology, the sound is light and quiet, and the retro typewriter style high key position brings a realistic mechanical feel. 2. Ergonomic design, comfortable angle, relieve wrist fatigue. 3. Button life: 1 million times 4. Working voltage: 3V 5. Number of keys: 75 6. Type: 2.4G wireless 7. Power supply method: Keyboard: AAA battery x 2 Mouse: AA battery x 1 8. Resolution: 1000DPI