This fingerprint lock has low power consumption and rechargeable lithium battery that can support more than 6-month of standby time and can be unlocked more than 2000 times. It is made of zinc alloy, and the lock beam is made of stainless steel.  Price drops from $26.99 to $24.29 to just $21.86 when you join Prime and clip the 10% off coupon on the product page during checkout. Shipping is free for prime members or on orders over $35.

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