Fangrui Product Details 1. Keyless Smart Cylinder ,solution For Smart Home 2. Easy 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 Keep Your Safety 4. Support Permanent Password And One-time 5. The Advantage Of The Smart Cylinder Material: Aluminum Alloy + Brass Unlock Way:card/password/app/key Ip Class:ip5x(dust And Splash Proof) Power Supply: 1xcr123a(alkaline) Installation: Intermediate;tools Required(lncluded) Available Thickness: 35mm~60mm Power: 1x Micro-type-c Charging Port Product Dimension:front:193x75mm Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour: A: Black Package Contents: 1 X Lock 2 X Card 2 X Key 2 X Suction Cup 2 X Hexagon Wrench 1 X Screwdriver 1 X Reset Card 1 X English Manual Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.