Promate Bolt-20Pro 20000Mah Slim Power Bank Dual USB 10W Type-C Smart LED Display & Safe Adaptive Charging for Smartphones - Black: From the manufacturerBolt-20Pro is engineered to be the ideal portable power bank for multiple devices. This high-capacity 20000mAh power bank ensures faster and smarter charging, through the dual USB output ports and a USB-C input/output port. The built-in multi-protection system combine