Smart Design 

The keyboard is automatically turned on when you open it and turned off when you fold it.

This ultra slim tri-folding Bluetooth keyboard lets users enjoy creating and communicating across multiple platforms on Bluetooth enabled devices.

Specification:

• Bluetooth version: Bluetooth 3.0 
• Operating range: up to 10m(32ft) 
• System requirements: iOS, Android, Windows and Mac 
• Power: built-in 750mAh lithium battery 
• Uninterrupted Working Time: 5h (backlit on) ~ 300h (backlit off) 
• Standby Time: 90 days 
• Charging Time: less than 4h - Key lifespan: 3 million clicks 
• Dimensions: 146 x 89.6 x 16.8 mm (folded) / 251.7 x 89.6 x 7.9 mm(unfolded)
• Warranty: 12 Months