$7 free shipping w/ Prime点我购买
Aukey Direct via Amazon offers the Aukey FM Transmitter Radio Car Kit, model no. BT-C4, for $15.99. Coupon code "YD8DVOQ9" drops it to $6.99. Plus, Prime members bag free shipping. (Non-members can spend $49 to bag free shipping; otherwise, it adds $5.99.) That's $7 under the lowest total price we could find for a similar model. It features a cigarette lighter power supply, 3.5mm jack, USB charger port, and digital station readout.
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