Standby Time (h) 100h, Charging Time (h) 0.5-1h, 3.7V, Transmission Distance 20m, Battery Capacity Charging box: 300mAh, Microphone Yes, Sensitivity 111dB/mW, Impedance 24Ω, 3.7V, Working Time (h) 3h, bluetooth Version V5.0, Earphone: 40mAh*2, Frequency Response 7-40kHz.
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Updated:
Banggood
Warehouse in China.
Link: KZ S1D TWS Earphones
$28.46 with coupon: BG651551
$28.46 with coupon: BGBRPL2
Additional Banggood coupons:
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