1. Single track and low-frequency boost 2. Button 3. Built-in 900mAh Li-ion battery 4. 2-inch loudspeaker and 2-inch low-frequency radiating element 5. Output: 4Ω5W 6. Frequency response: 20Hz-20kHz 7. Bluetooth 2.1+EDR 8. Degree of distortion: <1% 9. SNR: >90dB 10. Product size: L80*W80*H52 12. Two-way hands-free calls Packing Gift card box or simple white box Custom design box as per order demands Export packing: PP bag-unit box-inner carton-export carton Delivery Shipping methods: DHL, UPS, FedEx Delivery lead time: 7-10 days after payment confirmed