universal magnetic charger is compatible with Smart watch that use magnetic charging, and the pin spacing of the charger is 2.84mm. The compatible charging contact spacing of the charger can be 2.5mm-3mm. Please measure the distance between the charging contacts of your device before purchasing. If the charging contact measurement distance of your Smart wearable device exceeds 3mm, please buy chargers of other sizes in our store. Feature: 1.Wide compatibility, Compatible with most magnetic charging devices. 2. Fast charging & Stable performance 3. Magnetic charging to be convenient and fast, charging interface is stable, the connector is not easy to fall off. 4. Built-in anti-short circuit protection module to prolong battery life. Specifications: Include: 2 chargers Cords Cable Length: 100 cm Input: 5V / 1000-1500 mAh Output: 5V/ 1000 mAh