*Color:black/white/Customization
*(Bluetooth Ver. No)：V5.1
*IC Solution： Airoha 1536U
*Bluetooth Profile：HSP / HFP / A2DP / AVRCP
*Audio Codec：AAC，SBC
*Battery in earbuds：50mAh
*Battery in case：330mAh
*Speaker:10mm Double magnetic drive unit
* frequency range：20-20KHz
*Sound pressure level (Sensitivity):90±3dB At 1kHz 1mW/IEC711 16Ω±15%
*BT Music Play Time：6H
*Charger case Weight：约40g*Charging Port：Type-C
*ANC performance:35+/-3 dB
* ANC off/ AMBIENT_MODE/ANC on （Cycle setting）
* IPX5*
Other：Precision private mode, digital noise reduction, ergonomic design, HIFI sound quality, dual drive unit, double composite diaphragm design custom horn, touch control, wireless charging, Hall switch, master-slave switching, signal stability, ultra-low power consumption, long-lasting battery life.
Headphones and charging box：46g
Charger case：37g
earbuds：(Single ear)4.5g *2=9g
The whole machine includes packaging：163.5g
Color box size：100*100*45
Carton box size：520*520*200（100PCS/CTN）
Gross weight：16.5kg
https://www.yatwin.com/anc-tws-earbuds/