Features:1. Padlock without Charging: 2-way communication technology, reverse power supply for cell phones to open the lock. After opening the lock to keep 2-3 seconds after leaving, to ensure that the power supply is sufficient to avoid insufficient power supply to close the lock, you can point off the lock function.2. Remote Authorization to Open The Lock: When a friend needs to open the lock, you can also authorize the lock in a distant place, add APP friends, authorize the lock or remove permissions at any time and anywhere.3. Lean on A Lock: Switch the lock more simple, support NFC bracelet unlocking, cell phones open every open APP, authorize the bracelet to lean on a lock.4. Unlock Positioning Display: Unlock positioning at any time to query, unlock positioning for cell phones, you can see the unlocking time, unlocking person, unlocking time. Time, unlocking person, unlocking location.5.After-sale Service: If you have any questions, please immediately and we will help you solve it as soon as possible.Specifications:Material: ABS+PCMaterial of unloading buckle: SUS 304Support models: support NFC function of cell phonesPower model: cell phone NFC reverse power supplyWaterproof: IP55Android: 9.0Protection level: IP22Unlock mode: AP, NFCSize: 72*40*18MMOccasions:Can be used for personal luggage, dormitory lockers, factories sites, hotels office, indoor door, gym,etc.includes:1 * Lock1 * Manual