Description These portable chargers make the perfect promo giveaway! Made of ABS silicone and plastic, these water-resistant power banks charge your devices wherever you travel. Features include an integrated LED light that tells you when the device is charging and displays how much power is left. The rechargeable lithium battery only takes 4 hours to charge and a carabiner is included for easy attachment to belt loops, bags and more. Each power bank has 5VDC/IA input and 5V/2.1A (2.4A Max) output.