Materials: Zinc alloy+stainless steel
Color:  black ,excess weight: 1070g ,                                                                      
 Dimension of lock shackle:φ18mm
Fingerprint scanner: semiconductor residing fingerprint scanner
Unlock: Bluetooth/Fingerprint /Application
Fingerprint capacity: 10 teams
Energy provide sort: microUSB charging                                                  
Battery:260mAh three.7V
Kind-C input:5V/200mA
Waterproof:IP65                                                                                        
Number of keys:two keys