This lock can be controlled using a smart device using the Crest Smart Application or store up to 10 fingerprints and this way, you won't need to carry a key everywhere you go

Crest Wireless SmartLock Padlock/Fingerprint Safety Lock - Silver
The Crest Smart Heavy Duty Padlock is the perfect solution for people constantly on the go. This lock can be controlled using a smart device using the Crest Smart Application or store up to 10 fingerprints and this way, you won't need to carry a key everywhere you go. The shackle is made of solid 10mm stainless steel for added security and an IP waterproof rating of IP64 so you know it'll last.

Specifications
Shackle: 10mm Stainless steel
Fingerprint Resolution: 120 x 120 DPI
Fingerprint Storage: 10 Fingerprints
Battery Type: Rechargeable 300mAh
Input: Micro-USB 5V DC
IP Rating: IP64 Water resistant
Working Temperature: -10°C ~ 50°C

Dimensions Approx.
70 x 104 x 28mm

Includes 
1 x Wireless SmartLock Padlock/Fingerprint Silver