Main parameters: 

Item No.: VP142 

Type: Universal power bank

Cell: Li-Polymer battery

Capacity: 4000mAh

Input: DC 5V 1A

Output: DC 5V 2.1A

Size: 106.6*68.4*10mm

Net Weight: 150g

Material: Structure of Matel, Aluminium alloy

Colors: Optional

Certificate: FCC, CE, RoHS

Other parameters: 

Input port: Micro USB

Output port: Single USB

Power indicator: 4 lights

Cycle life: >500times

Safety protection: Over-charge, over-discharge, over-current, over-voltage, short-circuit, over-load and more

Operating environment: -10 to 45° C, 45 to 75% RH

Storage environment: -5 to 30° C, 45 to 75% RH

Special features: 

Triple safety protection

Aluminum slim design power bank 

Portable charger for Mobile, GPS, MP3/MP4, Tablet PC and so on