Product description is as follows:

Mechanical behavior:
Word key drawing force: ≥ 0.8kgf
Word key back elasticity: 55 ± 7gf
Press the front stroke: 2mm ± 0.5mm
Total stroke: 3mm ± 0.5mm
Work: RUBBER DOME
Mechanical working life: more than 10 million times

Electrical performance
Interface: USB compatible USB 1.1 / 2.0

Power Requirements:
1. Operating voltage: 5V DC ± 5%
2. Maximum operating current: 100mA
3. Electrical working life: 10 million times

Working environment and temperature:
1. Ambient temperature
A. Operation: 5 ℃ ~ 50 ℃
B. Storage: -15 ℃ ~ 65 ℃
2. Relative humidity
A. Operating: 10% ~ 85% RH 25 ℃
B. Storage: 5% ~ 95% RH 25 ℃

Product Specifications:
Product size: L448.8mm * W151.4mm * H21.8mm
Number of keys: 104/105/106/107/109 key / Layout
Language: US / UK / KR / BR / JP

Keyboard main material performance parameters:
A， keycap: silk screen plus varnish
B， conductive membrane switch main performance parameters:
1. The maximum allowable current: 30VDC， 33 mA 10VDC， 100mA
2. Contact Impedance: The loop impedance must not exceed 800Ω
3. Dielectric strength: MAX. 100V / DC when more than 50 M
4. Key operation pressure: 50-350g / cm2
5. Working environment temperature: -40-55 ℃
6. Life: more than 10 million times

Product Features:
1. Elegant shape， clear print writing
2. Waterproof keyboard design， durable
3. Streamline ergonomic design， stylish ultra-thin keycap feel comfortable and gentle
4. High-quality film button.

Product Compatibility:
1. Support WINDOWS / 95， 98， ME， NT， XP， Windows VISTA / 7/8 and other operating systems.
2. Compatible with IBM PC. Multi-language versions are supported.