Callmate 13000 mAh Music Box metal power bank is an essential travel accessory. The device is equipped with the power efficiency greater than 90% and will make sure that your mobile stays charged throughout your journey. It comprises of safety measures like multiple circuit protection systems, over charging protection, etc; to keep your smart device safe. The 13000 mAh capacity if this lithium-ion battery makes this power bank a durable and extremely efficient one. It takes 12 hours to get entirely charged and comes with a fashionable design. This power bank is compatible with all the handsets of Samsung, Nokia, iPhone, iPad, Htc, etc; and is available in many different colours.