Material: ABS+ silica gel Bluetooth version: BT V5.0+EDR version Running time: 4-5 hours Standby time: 120 hours Working range: 10 meters (free space) Battery capacity: 400 mAh Transmission distance: 10-15 meters, no obstacles Music playing time (100% volume) : about 3-4 hours Support TF Card up to 64GB (TF card Not included) Features: Bluetooth, TF Card, waterproof, noise cancellation, microphone.