Description Rounded Edges: It is comfortable to touch and prevent your hand from being scratched and scraped. Suction Ring: It can be absorbed on the wall to hang up your keys, more convenient for your storage. Carrying Cord: Both the smart key card and reset card come with a carrying cord, you can tie it together with your keys to prevent loss. Emergency Charging Port: When the product is out of battery, it can be emergency charged through this micro type-C charging port to renew the door lock. Application It's suitable for 1.4-1.8in door thickness and European standard lock hole. It is suitable for homes, apartments, garages, basements, hotels, and offices. Specifications Material: Aluminum Alloy, Brass, Stainless Steel Surface Treatment: Polishing, Electrophoresis, Painting process Color: Black Style: Modern Shape: Round Assembly Required: Yes Installation: Intermediate Power Supply: 1*CR123A Battery ( Not Included) Unlock Way: APP, Password, Smart Keycard, Manual Key IP Class: IP5x(Dust and Splash Proof) Emergency Power: 1*Micro Type-C Charging Port Battery Level Alert: Below 20% Working Temperature:-20-60/-4-140F Operating Humidity: 55% Scanning Time: 0.3s False Recognition Rate: 0.1% Rejection Rate: 0.1% Storage Capacity: 100 Passwords, 100 Card Pairs Door Thickness: 35-45mm/1.4-1.8in Gross Weight: 0.55kg/1.2lbs Front Part Size: 42*42*58mm/1.65*1.65*2.3in Back Part Size: 34*31.4mm/1.3*1.2in Product Shortest Length: 60mm/2.4in Package Size: 25*10*7cm/9.8*3.9*2.8in Package Included 1* Lock Cylinder 2* Smart Keycards 1* Reset Card 1* Setting Steps Card 2* Manual Keys 1* Screwdriver 2* Suckers 2* Allen Keys 1* English Manual Notes 1. Please check the cylinder length to make sure it fits your door before ordering. 2. We sincerely recommend professional installation. 3. Please read the manual and product labels before operating this product, and keep it for further reference. 4. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you order.