Model Number: SINO-KB-688 Key Specifications/Special Features: Features:Unique mute design, stylish figurationKey switch life=20,000,000 timesPlug-and-play supportedCompatible with Windows 2000/ME/NT/XP/VISTAPS2/USB/U+P availableSpecification:Dimensions: 490 x 200 x 25mmKey layout: 104/105Connector: PS/2 (USB optional)Working voltage: 4.5~5.5VWorking current: less than 40mAKey cap lifespan: ten million time
Key cap force: 60± 15g
Key cap pulling force: 1.2~1.5kg
Avg. no broken time: 100,000 hours
Cable length: 1500± 30mm
Environmental facts
Working temperature: -15~50°C
Working humidity: 10~85% RH
Storage temperature: -15~60°C
Storage humidity: less than 90% RH

Packing info:

1pc/box: 573x220x40mm
20pcs/CTN: 588x425x460mm
20 feet: 5000pcs, 40 feet: 10,000pcs