This BT padlock can turn your phone into a key. Easy to use with the free app (suitable for both Andriod and IOS system). Keyless design provides flexibility as you share access with friends, family, colleagues and employees, etc. No more worry about losing keys, forgetting password or unauthorized key duplication.<br/>Features:<br />Wide application: perfectly used for doors, cabinets, bikes, backpacks, storage lockers, etc.<br />Free APP unlock: keyless convenience helps you get rid of worrying about lost keys or forgotten combinations(suitable for Android and IOS system).<br />Great flexibility: one lock can be authorized to multiple users and a user can unlock multiple locks.<br />Easily monitor activity: including unlocking record and sharing record.<br />Superior strength and practability: made of aluminum alloy body and stainless steel latch hook.<br />IP65 waterproof: high waterproof grade allows outdoor application.<br />Replaceable battery: built-in CR2025 battery, it provides about 1000 unlock times, longer battery life.<br/>Specifications:<br />Material: zinc alloy, stainless steel<br />Color: silver<br />BT: 4.0<br />Android: 4.0 and above<br />IOS: 7.0 and above<br />Battery voltage: 3V<br />Battery: 3V, 150mAh CR2025 battery<br />Battery unlock times: about 1000 times<br />Lock size: 58 * 36 * 20mm / 2.3 * 1.4 * 0.8in<br />Lock weight: 80g / 2.8ounce<br />Package size: 155 * 87 * 30mm / 6.1 * 3.4 * 1.2in<br />Package weight: 117g / 4.1ounce<br/>Package List:<br />1 * Padlock<br />1 * User Manual