Specification:<br>Material:PCB<br>Compatible device:Suitable for 3.7V battery<br>Functions:Can charge 4 batteries at the same time<br>Package size: 6 * 2 * 1cm / 2.4 * 0.8 * 0.4in<br>Package weight: 12g / 0.4oz<br><br>Packing List:<br>1 * 3.7V Lipo Battery adapter