1. Sizes: 63*63*279mm. Weight: 353.9g. 2. BT v4.2. Microphone type: dynamic. 3. Speaker: 52mm. Power: 30W / 15W. 4. Battery capacity: 2000mAh, charging for about 4 hours. 5. Use time: 3 hours. 6. Support BT, AUX connection, support FM audio transmission.