iWALK Chameleon 2000mAH Battery Case for iPhone 4

IWALK Chameleon iPhone4 battery case is a sleek, protective for the iPhone 4. There is no need to sacrifice the beauty of your iPhone4 with some clumsy looking case - the hardshell casing of IWALK Chameleon wraps snugly around your iPhone4 to give it maximum protection while enhancing the look and feel of the iPhone4 itself.
5 Bumper cases of White/Black/Clear/Red/Sliver are supplied in the box, which is why it is called "Chameleon".
In addition, IWALK Chameleon has ON/OFF switch that turns on the extra power only when required. The IWALK Chameleon cases are designed specifically for iPhone4.

Features:
IWALK Chameleon cases are designed specifically for iPhone4 and have been certified by Apple, Inc. as a "Made for iPhone"(MFi) product.
5 Bumper cases of White/Black/Clear/Red/Sliver are supplied in the box, which is why it is called "Chameleon".
Hardshell casing of IWALK Chameleon wraps snugly around your iPhone4 to give it maximum protection while enhancing the look and feel of the iPhone4 itself.
IWALK Chameleon has ON/OFF switch that turns on the extra power only when required.
2000mAh can extend play time on videos up to 13 hours, play audios up to 55 hours, surf the internet up to 7.5 hours, and standby up to 400 hours.

Specs:
power on/off switch.
DC IN : DC5V/1A.
DC OUT : DC5V/500mA.
Capacity: 2000mAh Lithium-polymer battery
3 LED battery level display.

iPhone Batteries Reviews:
When I shop around the battery pack, I found the brand "iWALK" and I like it.
In terms of point of purchase, I prefer two-piece type which consists of battery part and bumper case. And, surprisingly, iWALK supply 5 different colour bumpers in the box. Then, in case of the need of the replacement of bumpers, hassle-free, peace of mind unlike other battery brands. This IWALK, instead of integrating part of the side panel into the battery component, uses a four-sided bumper case to securely encircle and fasten the iPhone4 to the battery pack part. As per the instruction tab attached on battery pack, first,I slide the iPhone4 into the battery pack's 30pin dock connector parallelly, then snap on the bumper in each corner of the rectangle. The side-bumpers rises high enough to protect the screen.
Very sleek, no bulk, very thin and light. In the box, there is screen protector film with cloth and squeegee which is very thoughtful. 5 bumper case / screen protector film.. delightful! This batter pack can charge and sync with case on through micro USB, and battery LED indicatoris at the bottom part of the pack, which I don't need to turn it back to check the LED.
In terms of battery performance, I have been using IWALK fully charged with my iPhone 4 almost drained completely (5%).I charged it from 5 percent to 100 percent about 2hours 30minutes,and still 1LED remained. My iPhone4 was configured for my normal usage (background push enabled, WiFi on,SKYPE on,brightness-80%).Which means I think it virtually doubles the power. And, there is power on/off switch on the right side, so if I don't want to power my iPhone4, I just switch off of the battery pack (This function is quite useful). Overall, I am very pleased to find IWALK Chameleon (I think 5 different colour bumper cases supplied, so it is called CHAMELEON~~~) and strongly recommend.

i tested my iphone 4 with notification on, 3g on, location service on. Iwalk can charge from 10% battery to 98% . It might charge more after few cycle coz the battery still new. While charging i left the phone idle..not much usage.can charge and sync with itune like normal with the micro usb cable provided.

iWALK Chameleon Case and Battery Pack for iPhone4 (2000mAh)

IWALK Chameleon iPhone4 battery case
 

 

iwalk chameleon iphone bumper with battery