NewRixing NR-3020 Outdoor TWS Wireless Bluetooth Stereo Waterproof Dustproof Shockproof Speaker Features: 1. Two 3.5mm external AUX audio input channels 2. Wireless connection and playback via Bluetooth 4.2 + EDR version 3. Support FM radio and TF card player (not included) 4. Support hands-free when answering the phone (using microphone) 5. Support TWS1+1 to achieve true wireless Bluetooth left and right channel separation speakers Specifications: 1. Chip: Bluetooth 4.2 2. Output power: 3W x 2 3. Power input: DC 5V1A 4. Speaker: 52 mm, 4 ohm, 16 core 5. Input impedance: 4 ohms 6. Signal to noise ratio: above 80dB 7. Power plug type: micro USB 8. Charging time: 2 hours 9. Battery: 1200mAh 10. Technical frequency: 90Hz -18KHz 11. Bluetooth working range: 10m 12. Bluetooth protocol: A2DPAVRCPHFP 13. Product size: 19.60 x 6.10 x 8.10 cm 14. Product weight: 0.4395 kg Packing list: Bluetooth speaker x 1 Audio cable x 1 Charging cable x 1 User manual x 1