$12 free shipping w/ Prime点我购买
GranVela via Amazon offers the GranVela V1 High Definition Dual Dynamic Driver Professional In-Ear Headphones for $24.90. Coupon code "73SBNHL4" drops them to $11.90. Plus, Prime members bag free shipping. (Non-members can spend $49 to bag free shipping; otherwise, it adds $6.19.) That's $53 off list and the lowest total price we could find. It features 6mm drivers, 20Hz to 24kHz frequency response, and 110dB sensitivity.
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