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Ultra-slim Portable Backup External Battery Charger Power Bank With Built-in Micro-USB Cable

  • Introduction:Product name:rechargeable battery charger power bank| Capacity : 4000mah | Input : 5V / 1A | Output : 5V / 1A/2.1A| Size:140*61.5*21.8 mm | Weight:150G | Charging time: 6-10 hours | Circuit protection: Accept | Operating Temperat