Xiaomi 5000 mAh Powerbank Lighter External Batter Charger 2.1A iPhone, iPad, Samsung, Sony, Xiaomi, HTC, Motorola, Android, Nokia, Nexus, Smartphone &ndash; Silver Capacity: 5000 mah Aluminum alloy power bank, enough energy for up to 3 additional charges All aluminum alloy shell surface, circular arc edge and anodic oxidation technological design Feature the indicator to show when it's charging Comprehensive optimization of charging and discharging efficiency