Up to 10 hours play time for extended use. Sweat resistant with reflective cord for safety during night time use. Magnetic connection disables power and secures buds when not in use. Ear hooks and fins are multiple sizes for custom, secure fit during activities. Rechargeable, with charging cable included. Boasts hands free calling allowing you to move from music to calls. Wireless up to 10 metres with securlock turbine design to keep earbuds in place. Safe Surround allows you to mute audio in your left ear by pressing the safe surround button on the left ear bud. When activated this feature enhances your awareness when approaching dangerous junctions during your workout without losing your rhythm. To resume audio in your left ear, please press the button again. Includes reuseable water bottle packaging. Plastic ear pieces. 0.2mm driver. Manufacturers 2 year guarantee.