A small, hands free, portable, rechargeable, waterproof, UV-C light emitting disinfection device. The disinfection device has a durable outer housing that holds an array of externally facing Ultraviolet C spectrum (UV-C) Light Emitting (LEDs) that emit light within the germicidal range of the Ultraviolet C spectrum or between the wavelength(λ) range of 200 nm to 280 nm. The disinfection unit can be deployed in a water bottle, backpack bladder, water jug, or any suitable container to disinfect water or other liquids.