... solar cellphone charger Technical Parameter1.Solar panel:5.5 V,3W 2.Solar conversion efficiency above ... built-in battery can be repaired automatically. 5,Humanility design:low battery alarm and automatic shutdown ... 4*7cm, 20pcs/ctn carton size:51.5*36.5*36cm NG:5.6KG GW:15.5KG Color optional black ... , red, yellow, blue, green Size and weight140*88*23 mm,NG ...