Promotional Product Features: case: 10 ( l ) x 2.8 ( w ) x 2.8 ( h ) • ABS & silicone earbuds: 60 ( l ) x 2.2 ( w ) x 1 ( h ) • ABS & TPE supports playback and call pick-up from smartphones, tablets or most other Bluetooth compatible audio devices internal rechargeable lithium polymer battery recharges via USB cable ( includes ) Bluetooth version 3.0 10m visible distance 2 hrs recharge time 1 hrs playback time For music lovers, our Crescendo Bluetooth Earbuds offer a quality sound experience. With a built-in mic that allows you to pick up calls, it also supports playback from smartphones, tablets and other Bluetooth compatible audio devices, and is easily rechargeable. Branding Options Direct to Print (DP) Pad Printing (PB) Pad Printing (PC)