Smart Bike Lock, 4-Digit Password IP55 Waterproof Anti-Theft Chain Alarm Lock with LDE Indication Light Control Through APP, Suitable for Indoor and Outdoor use

• 4-DIGIT CODE: easy to set 4-digit code with 256 combinations in total; very easy to remember. (Note: the anti-theft lock will alarm immediately if the code is entered incorrectly three times.)
• ANTI-THEFT LOCK: This anti-theft bike lock helps you to secure your bike, scooter or other objects safely and protects your property. Over 110 decibels alarm sound. The anti-theft bike lock immediately alerts you when a thief cuts the wire rope or removes the locking screws, and also sounds an alarm when the lock is shaken or moved. Wire rope diameter 10 mm, length 80 cm (optional 40 cm / 1.2 m).
• SECURITY: the combination unlocks the lock without the need for a key; the bike lock is also highly resistant to shearing and corrosion, making it difficult for an attacker to open. Multiple protection, whether it's vibrating the lock, cutting the lock cord or dismantling the screw and losing the wrong code will trigger a super loud alarm. With the anti-theft lock, you can leave your vehicle outside the shop or in a small area and shop or go home to rest with confidence.
• ROBUST AND non-toxic and environmentally friendly waterproof. IP44 waterproof certified for indoor and outdoor use. Can be used normally within a temperature range of -10 to +60°C. The anti-theft lock is powered by three AAA 7 batteries with a standby time of 8 months and a low battery indicator function for timely charging when the battery is too low.
• HOW TO USE: first remove the screws and put the batteries in; after covering the lid, tighten the screws (if not tightened,the alarm will be triggered); next insert the lock (if not, the alarm will also be triggered); when finished, press the button in the middle of the lock body to lock it, then it will prompt "DI DI DI"The lock is unlocked by entering the code and pressing the middle button, with a long "DI" sound.When you press the side button, the lock can be removed.

Specifications: Power Supply: Three AAA Batteries (Not Included) Battery life: standby mode, about 8 months or more Specification of steel rope: diameter 10 mm, length 80 cm (optional 40 cm, 1.2 m) Chain Specification: 6mm in diameter and 80cm in length Operating temperature: - 10 ~60℃ Storage Temperature: -20 ~+80 ℃ Size: 9.2*5.5*3.4cm/3.6*2.2*1.3in Package Weight: 300g/10.6oz Package List: 1 * Lock (Batteries Not Included) 1 * Screwdriver 1 * User Manual