Powerful PD 30,000mah battery capacity WYG 21700 li-ion cells which is 40% more energy efficient than traditional power banks Universal USB-C charging port (PD). Will charge most portable devices with up 12V output (all smartphones, tablets and most mini notebooks) Auto shut-off mode to protect against short circuit, over-current, over-charging and over-discharging Water resistant rugged body Designed in the UK The Pebble Argonaut PZ30 PRO is a powerful 30,000mAh rugged power bank with PD universal USB-C charging port. With a capacity of 30,000mAh and 18W output, it's perfect for extended trips away recharging multiple devices from smartphones to tablets and mini laptops. Design LED indicators Battery level Protection features Water resistant Built-in flashlight No Shape Rectangle On/off switch Yes Display type LED Built-in display Yes Power bank & device charging at once Yes Charger compatibility Universal Product colour Black Number of simultaneously connected devices (max) 2 Perform