Suggested Retail: $17.99. SECRUI Wireless Doorbell - Waterproof Mini Doorbell 1,000ft Range 110dB Mute Mode 58 Door Chimes & Colorful LED Flashing - Black. This SECRUI wireless doorbell boasts an exquisite appearance and high quality. It is weather resistant and energy-saving, leading to a convenient life. It has a long range and works right out of the box. The battery life lasts for 3 years. Brand: SECRUI. Model: M520 F55. Alternate Title: SECRUI Wireless Doorbell, Waterproof Mini Doorbell 1,000ft Range 110dB Mute Mode 58 Door Chimes Colorful LED Flashing Black. Color: Black. 1ACCESSORIES 1ACCESSORIES 1OTHER Black. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.