Model: DW02 Bluetooth version: JL V5.0 Speakers: 40mm * 2 Frequency response: 100 Hz – 20,000 Hz Protocol support: A2DP, AVRCP, HSP, HFP Working distance: up to 10 meters Battery capacity: 200 mah Resistance: 32ohm Active work time: up to 4 hours Standby time: up to 200 hours Charging time: 1.5 hours Weight: 183.3g Dimensions: 200 * 150 * 75mm Black in colour