1. Keyless Smart Cylinder ,Solution For Smart Home2. Easy Replacement And Installation, No Breaking The Door Or Change The Door Body, Simply Use A Hex Screwdriver To Install In 10 Minutes.3. Your Smart Housekeeper Always Keep Your Safety4. Support Permanent Password And One-Time5. The Advantage Of The Smart CylinderMaterial: Aluminum Alloy + BrassUnlock Way:Card/Password/APP/keyIP Class:IP5x(Dust and Splash Proof)Power supply: 1xCR123A(Alkaline)Installation: Intermediate;Tools required(lncluded)Available Thickness: 35MM~60MMEmergency Power: 1X Micro-Type-C charging portProduct Dimension:Front:193x75mmNote:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The UseColour: A: BlackPackage Contents:1 x Lock2 x Card2 x Key2 x Suction Cup2 x Hexagon Wrench1 x Screwdriver1 x Reset Card1 x English ManualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.