USB to 4.2V 1A 5.5x2.5mm for for 3.7V Li-ion Lithium Batte
Features: Provides 4.2V for from USB,Power devices from a USB to 5.5x2.5mm port.
By powerbank to power other devices. Such as: USB lights, USB fan, radiator, speakers, and so on
With light, light when charging, green light when fully charged.
The size of the for Connector is OD: 5.5 mm and
Safe and with built-in upgraded intelligent IC circuit, our adapter provides your devices perfect protecetion from over-current, over overload or short circuit.

Specifications:
Input: 5V 2A
Output: 4.2V 1A
Length:Approx.97cm/38.19in
Net Weight:28g

Package Includes: 1x USB to for Power Cable

note: Please allow 1mm errors due to manual measurement.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.