R201 With Charging Bin Hanging Ear Stereo Digital Display Bluetooth Earphones(White) Filter-CF Card to ensure the product quality

to ensure the product quality

Power by 3 x AAA batteries (not included) or DC 9V power supply (not included)

up to 64GB

and stable transmission

first act synchronization and second act synchronization

R201 With Charging Bin Hanging Ear Stereo Digital Display Bluetooth Earphones(White) Filter-CF Card to ensure the product quality1. Bluetooth version: V5. 3 2. Transmission distance: about 10m (without obstacles) 3. Bluetooth chip: AD6973D 4. Bluetooth protocol: HFP, HSP, A2DP, AVRCP 5. Battery capacity: charging bin 500mAh 6. Charging time: about 1. 5 2h 7. Speaker resistance: 16 ohms 8mm 8. Speaker output power: up to 5mW 9. Headphone sensitivity: 106dB 10. Frequency range: 50HZ 20KHZ Features: 1. Hanging ear to wear, comfortable and non sensory, non slip and not easy to fall