Amazon.com: Bands Compatible for Letsfit EW1 IW1 Replacement Watch Straps Classic Soft Silicone Lightweight Breathable Quick Fit Wristband for Letsfit EW1 IW1 Smartwatch, Soft and Durable : Cell Phones & Accessories
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Letsfit Smartwatch IW1 Heart Rate, Blood Oxygen Monitor, Activity Tracker, 1.4 Inch Screen, Purple and Gold - Walmart.com
Letsfit IW1 Smart Watch, Fitness Tracker with Blood Oxygen and Heart Rate Monitor, IP68 Waterproof, Dark Blue - Walmart.com