Neckband

Specifications:
Headphone type: in-ear headphones
Bluetooth protocol: HFP/HSP/A2DP/AVRCP
Music time: 8hours (related to playback volume)
Call time:6 hours
Bluetooth distance: about 10 meters
Waterproof: IPX5 waterproof
Bluetooth version: V5.0
Bluetooth effective distance: 10M
Speaker size: 10MM
Maximum power: 10mW
Sensitivity: 92dB
Frequency response: 20Hz-20KHz
Integrated battery: 3.7V / 110mAh
Life time: about 12 hours
Charging input: Micro USB, DC5V, 500mA

Specification:

Brand WAVEFUN
Model Flex Pro
Bluetooth Version Bluetooth 5.0
Processor QCC3003
Style Flex neckband design
Battery times Music /talking time Up to 9 hours
Charging time Around 40mins
Noise Reduction Noise Reduction version DSP & CVC8.0
Battery Capacity Battery capacity per pcs 120mAh
Battery quantity 1 pcs Whole Battery capacity 120mAh
Buttons Functions Switch songs Press Volume+ or Volume- for 2 sec
Reject a call Press MFB for 1 sec
Adjust volume Press Volume+ or Volume –
Last number redial Press MFB twice time