Hanging neck-mounted U-shaped bib Bluetooth sports running speaker Wireless Bluetooth audio

Type: portable speaker
Connection method: Bluetooth connection
Interface type: USB
Battery capacity: 1200MA
Frequency response range: 80Hz-20KHz
Output power: 4R3W
Signal to noise ratio: ≥70dB
Power supply mode: built-in lithium battery
Channel: 2
Play time: 5-8 hours
Effective distance: 7-10 meters
Function: waterproof, drop-proof, voice prompt, call
Shell material: plastic