Features:

Need 5V 2A power bank, mobile power or charging plug (not included) for power supply, largely prolong the shooting time of your camera.

Compatible with Sony ILDC cameras, such as compatible with Sony NEX-3/5/6/7 series, A33, A37, A35, A55, a7, a7R, a7II, A6000, A6300, etc.
Adopts multi-protection technology, such as short circuit protection, over-voltage protection and over-current protection, which ensures the absolute safety during use.
Cable length is up to 1.5m. Long enough, very convenient to put your own power bank or mobile power in your pocket or bag, or at somewhere else.

Specifications:
Model: NP-FW50
Compatible Camera Models:
Compatible with Sony NEX-3 series, NEX-5N/5R/5C/5T series, NEX-6 series, NEX-7 series;
Compatible with Sony α7 series (Alpha a7, a7R, ILCE7/B, ILCE7K/B, ILCE7R/B, ILCE-7, ILCE-7R);
Compatible with Sony A33, A35, A37, A55;
Compatible with Sony α5000, α5100, α6000, α6300;
Compatible with Sony RX10 series
Input: USB 5V 2A
Output: 7.6V
Power Supply: Power bank, mobile power and charging plug (not included)
Protection: Short circuit protection, over-voltage protection and over-current protection
Cable Length: 1.5m
Item Weight: 62g / 2.2oz
Package Size: 11.5 * 10 * 2cm / 4.5 * 3.9 * 0.8in
Package Weight: 66g / 2.3oz

Package List: (camera and battery pack not included)
1 * NP-FW50 Dummy Battery
1 * DC Power Bank USB Adapter Cable

Note:
Please use 5V 2A(output) power bank/ mobile power for power supply, if not, the item can not work normally.