Original Awei Y331 Portable Bluetooth Speaker.

Bluetooth version: v4.2+edr track system: stereo(dual sound track ) battery capacity: 2000mah driver unit: 45mm sensitivity: 150ms impedance: 4ω rated power: 5w*2 driver power: rms 5w*2 net weight: 387g packing weight: 302g color: grey charging time: 4h talk time: 10h music playtime: 8-10h product size: 181*70*73mm bluetooth protocol: a2dp / avrcp / hfp / hsp frequency range: 30hz-20khz input voltage: dc5v-500ma bluetooth frequency: 2.4ghz-2.480ghz optimal talking distance: 〈1m transmission distance: 10m(barrier-free space)