Bluetooth speaker features:

Aluminum alloy shell
Unique light coil design, playing status smart reminder
With special intelligent voice navigation function
Auxiliary input, support connecting with many kinds external audio sources
External volume adjustment buttons
Supporting tf card interface to play mp3, wav and ape/flac clear lossless audio formats
Handsfree function when coming call received
Line in
Nfc function (on option)

Product parameters:

Output: 3w
Bluetooth standard: v2.1+edr
Speaker: 50mm
Built-in battery: 3.7v 500mah
Input voltage: dc 5v
Charging time: 2 hours
Playing time: 6 - 8 hours
Impedance for speaker: 4¦¸
Thd:¡Ü1% (1khz/1w)
Snr: >90db
Frequency response:90hz to 18khz
Reception distance: ¡Ý10m
Material: aluminum alloy shell
Dimension: 60(¦µ)x58(h)mm
Unit weight: 145g