The compact, lightweight power bank is always a great and useful helper. Powerbank is made of aluminum alloy, which is strong and resistant to dirt. It is suitable for charging smart devices with a capacity of 5000 mAh - mobile phones, tablets, or digital cameras. High-quality circuit chip is safer and can effectively improve conversion rate, stabilize, switch off voltage, and ensure 9 times charge and discharge efficiency. Just press the button twice and the Powerbank will switch to charging smaller devices for two hours. This mode is suitable for charging bluetooth headphones, smart bracelets, or watches.