Features: If the battery is depleted when the padlock is off, insert a new lithium battery into the emergency socket and enter the key password. Constructed from 98% zinc alloy with robotic welding technology and a 304 stainless steel lock beam. No key is needed for unlocking; the lock status can be checked at any time. Utilizes a CC2540 chip for superior performance, significantly reducing power consumption and enhancing padlock functionality. Unlock in three simple steps: Unlock the padlock (display shows blue light), enter the 6-digit key password, and unlock instantly if correct. Incorrect entries will show a red light, prompting you to re-enter. Widely used for student dormitory lockers, drawers, suitcases, and warehouse paint stores. Specifications: Power: 80mAh Lithium Battery (included) Unlocking Mode: Key Password, Smart APP Lock Core Level: Chip Lock Body: Zinc Alloy Lock Tongue: Brass Induction Time: <0.5s Driver Chip: IG Company Bluetooth Chip: TI Company Size: Approx. 3.6 x 5.8 x 2.0 cm / 1.4 x 2.3 x 0.8 inches Package Weight: 121 g / 4.3 oz Package List: 1 x Bluetooth Padlock (battery included) 1 x User Manual Note: Please be aware that the new and old versions of this product will be shipped randomly. Please ensure you do not mind before ordering. Your 100% satisfaction is our top priority. We are committed to providing the best service. If you encounter any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best solution!