1. It is specially designed for 3 and other models of intelligent health sports watches 2. High quality interface to prevent oxidation. More efficient transmission. High quality metal material with strong tensile strength 3. Multiple protection technology provides short-circuit protection, overload and overvoltage protection. 4. Small DC ripple, high working efficiency and fast charging speed. 5. Data transmission: connect the applicable for watch to this charging stand and charge it with the attached USB data cable. It can also be used for data transmission between the watch and the computer Input voltage:5V Output voltage:5V Output current:700mA Interface:probe interface Weight:55g Cable length:100cm/39.4in Size:56x45x15mm/2.6x1.8x0.6Inch Application models:for 3/ 3 / 3 Sapphire/Quatix 3/ Charger instructions: Please use the charging head within 1A instead of the mobile phone fast charging head. It is recommended to use the computer USB for the most stable charging. Clip the watch in the right direction according to our picture. If you clip it upside down, it burn the watch. Thank you. Colour:Black Material:ABS Package Contents: 1 * Adapter Dock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.