3.7V, Standby Time (h) 100h, Impedance 24Ω, Microphone Yes, Battery Capacity Charging box: 300mAh, Earphone: 40mAh*2, Working Time (h) 3h, Sensitivity 111dB/mW, Charging Time (h) 0.5-1h, Frequency Response 7-40kHz, 3.7V, bluetooth Version V5.0, Transmission Distance 20m.
Aliexpress
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Updated: 29-07-2025
Banggood
Warehouse in China.
Link: KZ S1 TWS Bluetooth 5.0 Earphones
$38.99 with coupon: 13f142
Additional Banggood coupons:
1. First page
2. Second page
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