Eliminate the hassle for keys with the Tokk Dual Function Fingerprint Lock. This heavy-duty, weather-resistant lock uses biometric authentication technology to provide quick access to your valuables with a single touch. The long-lasting battery provides 1500 lock/unlock operations on a single charge and is easy to recharge via micro Usb. The 4-digit combination lock on the bottom makes it convenient to unlock at any time, regardless of battery status, so you always have access when you need it.