With a choice of 3 earbud cover sizes, you’re free to be inspired by the crisp and loud sound, while your earbuds fit securely in your ears. The unique coil-design cord provides stability and added comfort during sport and activity. Packaged in a protective compact EVA zippered case, the Swiss Cougar Denver Bluetooth X-Sports Earbuds can go wherever your active lifestyle takes you. 28 ( l ) x 4.5 ( w ) cm plastic & metal 90mAh with lithium battery charging time: 2 hours playing time: 4 – 5 hours standby time: 100 hours bluetooth version:5.0 bluetooth distance: 10m includes micro USB charging cable supports playback from smartphones, tablets or most other Bluetooth compatible audio devices