Features 1、Premium Quality: Zinc alloy lock body and 303 stainless steel lock tongue, the lock is rust-proof, sturdy and durable to use. 2、Fingerprint Unlock: 0.5 second quickly unlock, high capacity of 20 fingerprints, convenient to use. 3、Rechargeable Battery: Built in a rechargeable lithium battery, 6 months long working time after full charged. 4、Simple Installation: Just a few steps for easily installing, suitable for single drawer of which the thickness is below 22mm. 5、Wide Application: Perfect for single drawers, file cabinets and so on at home or in offices, gyms, swimming pools, etc. 6、USB Charging Port: Comes with a USB cable for charging, no need to worry when out of battery. Specifications No need keys anymore! Our fingerprint lock is especially designed for drawers and cabinets, 0.5s quick unlocking, 20 sets of fingerprints, 6 months long standby time, the fingerprint lock is safe, convenient and practical. Features: Premium Quality: Zinc alloy lock body and 303 stainless steel lock tongue, the lock is rust-proof, sturdy and to use. Fingerprint Unlock: 0.5 second quickly unlock, high capacity of 20 fingerprints, convenient to use. Rechargeable Battery: Built in a rechargeable lithium battery, 6 months long working time after full charged. Simple Installation: Just a few steps for easily installing, suitable for single drawer of which the thickness is below 22mm. Wide Application: Perfect for single drawers, file cabinets and so on at home or in offices, gyms, swimming pools, etc. USB Charging Port: Comes with a USB cable for charging, no need to worry when out of battery. Specifications: Color: Silver Material & Structure: Zinc Alloy Lock Body + Stainless Steel Lock Tongue Capacity: 20 Fingerprints (2 Administrators included) FAA: ＜0.002% FAR: <2% Electrostatic conservation Class: ＞15KV Built-in Battery: 1 * 3.7V 150mAh Lithium Battery Charging Port: Micro USB, 3.7V Charging Time: 2 Hours Working Time: Approx. 180 Days (10 times of unlocking every day) Working Temperature: -20~70℃ Working Humidity: 5%-95% (without Condensation) Hole Diameter: ＞18mm Drawer Thickness: ＜22mm Item Size: 40 * 15 * 48mm / 1.6 * 0.6 * 1.9in Head Size: 34 * 16mm / 1.3 * 0.6in (Dia. * H) Package Size: 7.6 * 6.6 * 5.2cm / 3.0 * 2.6 * 2.0in Package Weiht: 129g / 4.6oz Package List: 1 * Fingerprint Drawer Lock 1 * USB Cable 1 * User Manual (English) Package List 1 * Fingerprint Drawer Lock 1 * USB Cable 1 * User Manual (English)