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Specification:

Model: LX-B39B

Wearing method: head-mounted foldable
Functional use: wireless earphones, Bluetooth earphones, sports earphones
Bluetooth version: Bluetooth 5.0+EDR
Support Bluetooth mode: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5
Battery: 400mah
Speaker: 40mm/32Ω
Frequency performance: receiving sensitivity: -84dBm; maximum transmit power 6dBm
Transmission range: ≤10M
Card playback: Supports playing songs in an external TF card. (TF≦32G)
Indicator light: red and blue light flashes when power on, blue light flashes for playback after connection, red light turns off when fully charged.
Headphone charging: rechargeable 3.7V/400MAH polymer A-grade lithium battery with overcharge and over discharge protection board.
Charging port: USB charging port
Normal charging time: about 2 hours
Music play time:
Talk time: ≤6 hours
Standby time: 200 hours

Model ：B39 PRO

▶ Bluetooth receiving distance: 5.0+EDR

▶ Horn: 40MM/32 Ω

▶ Battery capacity: 350MAH

▶ Standby duration: ≤ 200 hours

▶ Charging duration: 2 hours

▶ Service time: 6-9 hours

▶ Color: Pink

▶ Headphone type: headphone

▶ Wearing mode: headworn

▶ Headphone output source: portable audio and video

▶ Plug diameter: 3.5mm

▶ Plug type: Bluetooth

▶ With or without microphone: built-in microphone

▶ Sound generation principle: dynamic coil

▶ Conductor length: 1 (m)