It has the benefits of low working temperature, good anti-interference performance, fast charging speed, high efficiency, and long service life. The watch charger is safe to use with protection against short circuits, over-voltage, overload, and overpower. It is made of high-quality ABS material, ensuring reliability and durability. The cable length is available in 30cm or 100cm options. Compatible with OPPO Band Style SpO2. Item Name: Charger Material: ABS Color: Black Input Voltage: 5V Output Voltage: 5V Output Current: 700mA Interface: Probe Interface Cable Length: 30cm / 100cm Compatible Model: OPPO Band Style SpO2 Features: Safe, Fast Charging, High Efficiency Size Details: Cable Length: 30cm / 11.81", 100cm / 39.37" (Approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x Charger (Bracelet Not Included)