With the ergonomic customized design, you will have a comfortable ear sense when you use it.
high capacity batteries are used for a long time, you will not worry about that it has no power after you charged it.
designed for sports, and witness, the sweat will not affect the using of the earbuds, and it is wear solid.
the frequency range is 20-20000hz, so the earphone can offer you the clear vocal sound, and it has a high sensitivity.
with the high quality material, the earphone is durable and it has a long service life.
transmitting distance: 10m/33ft.
bt protocol: hfp, a2dp, hsp, avcrp.
frequency range: 20-20000hz.
charging box capacity: 3.7v 450mah.
earphone battery capacity: 2 * 3.7v 50mah.
music play time: about 4 hours (depends on music volume).
charging time: about 1.5 hours for earphones, 2 hours for charging box.
earphone size: 25*30*26mm.
charging box size: 62*40*27.2mm/2.44*1.57*1
Condition: Brand New,