The sound of keystrokes is less than 20dB, which is less than the noise standard (30dB) for reading halls.
Wireless Technology: 2.4G+BT5.1+BT5.1
Wireless Distance: 8-10m
Mouse:
Size: 108*61*39mm
Key Number: 6
Resolution: 800-1200-1600DPI
Key Life: 3,000,000 Times
Power Supply: 1*AA (Alkaline Batteries Are Recommended)
Product Weight: 55g
Material: ABS
keyboard:
Size: 441*130*30mm
Key number: 104
Key Life: 8,000,000 Times
Power Supply: 1*AA (Alkaline Batteries Are Recommended)
Product Weight: 488g
Material: ABS