The size of smart lock is so small that you can easily place it in your pocket. Fingerprint padlock is suitable for both indoor and temporary outdoor use in gym, school, suitcase, handbag, luggage, bike, etc. Product Name: Fingerprint PadlockMaterial: zinc alloyColour: PinkWorking voltage: 3.0-4.2VLock weight and Size:90g,7.6*4.6*1.3(cm)Fingerprint sensor coverage: 72*64MMUnlock speed: within 1 secondLED light: three color light: red / blue / greenBattery: 3.7V lithium build in batteryWorking temperature: -10~+40 degrees CelsiusFingerprint capacity: record 10 times and save 10 groupsWide Application: perfectly used for doors, cabinets, bikes, backpacks, storage lockers, etc.10 Groups of Fingerprints: the padlock supports up to 10 fingerprints recording(support two administrators).USB Charging/3.7V lithium batteryThe fingerprint padlock will max last of 6 months after full charged.Packing list:1*Fingerprint PadlockYour arrival is my honor, our products have undergone strict quality inspection, please rest assured to buy, if you have any questions, please feel free to contact us, we will provide you with the best service.