Bluetooth speaker for mobile phone

Type: Bluetooth speaker
Connection mode: Bluetooth connection
Interface type: USB
Battery capacity: 500mah
Frequency response range: 100Hz-20KHz
Output power: 5W
Signal to noise ratio: ≥ 75db
Power supply mode: built in lithium battery
Channel: 2.1
Duration: 2 hours
Extended storage: 32GB
Bluetooth protocol: 4.1
Number of speakers: 1
Effective distance: 10M
Function: card, radio
Operation mode: key
Shell material: plastic
Supported format: U disk TF memory card
Speaker adjustment mode: key