Product Specifications
Bluetooth Specification: Version 2.0 Class 2
50keys
Standby Current: 1mA
Range of Frequency: 2.4GHz Spectrum
Operation Current: <25mA
Operating Voltage: 3.7Vdc(Li-ion)
Sleep Current: <0.8mA
Suitable for apple iPhone 4, iPhone 4S

Backlight description
1. When connect with the iPhone4/4s, Press the pairing button, the backlight turn be light automatically. In the process of connection, if the backlight be shutdown, can press the pairing button turn on the backlight again.
2. After connect with iPhone4/4s, press any key can turn on the backlight; More than 10 seconds, without any key press of words, the backlight be shutdown automatically.
3. Text input state, suggest using FN keys to turn on the baxklight.
4. The backlight only turn on in the correct process of connection with iPhone4/4s. When the bluetooth closed or shutdown, the keyboard will enter intelligent save electricity state the backlight is in shutdowm.