Series 1 smart watch fitness tracker in black, with a silicone black band. It is unlocked and has a 40mm case size. The smart bracelet is compatible with Android operating systems and uses the Apple Watch OS. Designed for unisex use, this fitness tracker is perfect for monitoring heart rate and providing a range of fitness tracking features. With its sleek design and functionality, this smart watch is a great accessory for those looking to improve their health and fitness.
