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LISEN Direct via Amazon [amazon.com] has LISEN 4-Axis 360° Adjustable Car Headrest Tablet Mount on sale for $17.99 – $8 off when you apply promo code 1WATVMPC at checkout = $9.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.