Features 1、With password error alarm function, enter the wrong password four times in succession, the keyboard will be locked for 60 seconds and activate the alarm. 2、With password memory function, the original password will remain after power off and battery changing. 3、With password confusion function, enter random numbers before or after the correct password to prevent others from peeking. 4、Adopts digital touch screen and number keyboard to enter the password, more convenitn to use. 5、Great electronic lock for agents, schools, spas/saunas, swimming pools, gyms, golf courses, supermarkets, hotels, companies, factories and families. 6、Designed with USB port for emergency charging unlock. 7、Made of high strength ABS material for maximum durability. Specification Item Type: Electronic Combination Lock Material: ABS Color: Black Optionla Size: L=20mm / 0.8in, L=30mm / 1.2in Power Supply: 1 x 3V CR2032 Button Battery (Not Included) Package List 1 x Electronic Combination Cabinet Lock 1 x Installation Accessory Pack 1 x Manual