Spare chargers compatible with fitbit versa 4 / fitbit sense 2 / fitbit versa 3 / fitbit sense smartwatch, support more than 2000 times repeated insertion-and-extraction test, ensure a longer lasting product lifespan. Premium Material - Made of TPE and TPU material, the flexible charger cord ensures tangle-free operation and magnetism force of attraction holds versa 3 securely without getting loose easily. Easy to Use - Just simply plug your sense 2 smartwatch into USB port on your PC, laptop, notebook, wall charger or car charger to charge. Safe & Stable Performance - Adopt high-quality oxygen-free copper to ensure the high efficiency and high stability transmission; Power protection inside (PTC), protect your watch from being damaged by over-voltage and over-current when charging. Portable & Easy for Carry - The whole length is 100cm/3.3ft. No need to remove your bands from the smartwatch. Put the USB connector to your PC, Laptop or Notebook.