Specification Color: Black Material: Zinc Alloy Surface Treatment: Painting Style: Modern Shape: Rectangular Control Method: Touch Lock Type: ‎Keypad Lock Capacity: 50 Sets of Fingerprints and 100 Sets of Passwords Power Supply: 4*AAA Batteries(Not Included, 4 * AAA batteries need to be purchased by oneself ) Capacity of Battery: 2200mAH Service Life of Battery: 8000-10000 Times Charge Port: USB Suitable Door Thickness: 1-3/8 inches (35mm) to 2-3/16 inches (55mm) Net Weight: 0.8kg/1.7lbs Gross Weight: 1kg/2.2lbs Product Size: 15.00cm*6.50cm*6.50cm/5.9*2.5*2.5inch Package Size: 21.8*17.8*7.3cm/8.58*7.01*2.87inch.