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SAVFY 4200mAh External Backup Power Battery Charger Case Cover For Samsung Galaxy S7 - Vertified by FCC/CE/ROHS - Compatible for: Samsung Galaxy S7 only - Built-in kick stand for Video Watching and Facetiming - 4 LED lights: each represents 25% of Juice (Power) left in the phone - Charge Cable: Use your Phone USB Cable to charge the battery (the cable not include) - Product Material: PC+ABS Plastic Notes: - When charging the battery case with phone attached, the phone battery will be charged first, After the phone battery is fully charged, charging of the battery case will begin. - *When charging the battery case with phone attached, data transfer is supported. To charge and transfer data simultaneously, simply connect the battery case to via your computer's USB port Specifications: - Capacity: 4200mAh - Output Voltage: 5V - Output Current: 2000mA - Input Voltage: 5V - Input Current:2000mA - Net weight: 105g - Charging time: ~ 4 hours - Dimension: 153 x 71 x 18mm Safety protection - Over temperature protection - Over charge protection - Reverse-charge protection - Over voltage protection - Over discharge protection - Over current protection - Short circuit protection Package Include: - 1 x 4200mAh battery case (Not include the phone)