Spare chargers compatible with Fitbit Versa 4, Fitbit Sense 2, Fitbit Versa 3, and Fitbit Sense smartwatches. Designed to support more than 2000 repeated insertion-and-extraction cycles, ensuring a longer product lifespan. This Sense 2 charger provides complete charge and sync compatibility, delivering fast original charging speed. High-quality copper wires ensure stable performance and strong adaptability. The Versa 4 charger cable includes built-in safeguards that protect your device’s battery from overcharge, overcurrent, and overvoltage. Temperature control and foreign object detection help ensure safe charging. A replacement charger cable ideal for use at home, in the office, in the car, or while traveling. Compatible with Fitbit Versa 3, Versa 4, Fitbit Sense, and Sense 2. Not compatible with other models. Connect via USB to a wall charger, car charger, or computer. For optimal charging efficiency and stability, connect this Versa 3 charger to a power source such as a PC.