RECHARGeABLE BEHIND THE EAR HEARING AMPLIFIER Discreet in-the-ear invisible model provides up to 16 hrs of continuous use It can be recharged via the battery in its protective case (1X AAA - supplied) or AC adapter (supplied) Comes with 3 different sized interchangeable ear caps and cleaning brush. Measures L4.2cm xW1.4cm xH1.9cm (15/16in X9/16in X6/8in). Show More