Multi-Size Support: This watch band adapter supports 18mm 20mm 22mm 24mm strap widths for Fitbit Air, letting you freely change between standard watch bands and elastic arm straps without any tools. Easy DIY Assembly: The DIY strap converter requires no extra tools for installation or removal, making it simple to swap bands quickly for different occasions or personal style preferences. Dual Wearing Modes: The arm band mount design allows seamless switching between wrist and upper arm wearing positions, covering daily use, running, gym sessions and outdoor activities. Sensor Unobstructed: The lightweight cutout design leaves all sensor contact points fully exposed, ensuring uninterrupted heart rate tracking and activity data collection during workout session. Solid PLA Construction: Crafted from rigid PLA bracket material, the adapter wraps snugly around the tracker body, locking it firmly in place during workouts to resist slipping and impact.
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