ITEM NAME:Dual USB 5V 1A 2.1A Mobile Power Bank 18650 Battery Charger PCB Module Board MO Features: 100% Brand New and High Quality This is the mobile power module Accessories, 18650 Circuit board. Meet the individual needs of your DIY, but you must understand basic electronic assembly. Motherboard comes with protection function: Charging overcharge protection, over-discharge protection, overcurrent protection. Specifications: Micro USB input: 5V 1A USB Output: 5V 2.1A / 5V 1A(Dual USB interface) Charging display: intelligent digital display Batteries Type: liquid lithium-ion batteries (18650) Product Size: approx.57mm x 28mm Screen size:approx.27mm x 17mm Material: PCB Color: as the picture shows Quantity:1 PC Package Includes: 1 x Battery Charger PCB.Batteries Type: liquid lithium-ion batteries (18650). USB Output: 5V 2.1A / 5V 1A(Dual USB interface). Micro USB input: 5V 1A. Material: PCB. Screen size:approx.27mm x 17mm.