Discreet in-the-ear invisible model provides up to 12 hrs of continuous use It can be recharged via the battery in its protective case (2X AAA - supplied) or AC adapter (supplied) Comes with four different sized interchangeable ear caps and cleaning brush. Measures L1cm xW1.4cm xH2.4cm (3/8in X9/16in X15/16in). We need certification Show More