Never have your iPhone 4 or 4S run out of battery. This compact backup battery will let you carry the power wherever you go. There's no need to charge your device through an electrical outlet, the Turcom TS-311 IS THE POWER SOURCE!
It is a Holder, It is a FM Transmitter, It is more a Smart Emergency Battery Cover!
Super thin and light, it is the most thin and light battery cover for iphone 4 and 4S!!
1.With the holder design, it can be a iphone 4 holder for the user to easily watchTV or take photos.
2.With Smart monitoring system inside, it can monitor the Li-poly charging currency, voltage, temperature automatically, when the charging input or output currency is too high, or the Voltage is not stable, it will cut off the charging circuit itself and the LED will be lighted on for showing out the related fault to protect the battery and mobile.
3.With smart power charging management, monitoring circuit and timing function.
4.With automatically power off function when the mobile is charged enough.
5.With battery capacity indication function in different capacities at 20%, 40% 60% 80% 100%.
6.When the battery voltage is lower than 3V, the battery will powered off automatically.
7.With FM transmit function, with USA professional digital FM transmit chipset inside. The sound effect is as better as FM radio.
8.With 4 FM transmit frequencies: 88.1/88.5/88.9/89.3MHz
9.With FM transmit frequency memory function.
10.With auto power off function in 60 seconds when there is no audio input.
11.With supporting Iphone 4 data Synchronization function.
Universal portable power bank
Elegant designed, fit for iPhone 4 and 4S
* Device Type: External battery Bank with FM Transmitter
* Capacity: 1600 mah
* Size: 123*60*14.5（mm）
* Input:5V-0.5~1A; Output:5V-500mA
* Standby time : 380 hours
1x Black iPhone 4 4S Case Charger
1x USB Adaptor Cable