Amazon with getwellue has the Wellue O2Ring Overnight Oxygen Saturation Tracker with Notification for Low O2 Level and Heart Rate, Free APP PC Report for Sleep Insights for $180 - $70 off with code WZV69BKA [Exp 3/21] = $110 with free shipping.
Best Yoga Deals, Balance Trainers / Fitness Gadgets on Sale
Has 1.23" 215x180 color LCD, heart rate monitor, sleep monitoring, and water resistance up to 164'.
Ends 1/26. Target has the Weight Watchers Scales by Conair WW26 Digital Glass Scale (Chrome / Clear Glass) for $9.39 with free in-store pickup or free shipping on $35+. Has a 400 pound weight capacity.
Amazon with Wyze Labs has the Wyze Smart Scale (Black) for $20 with free shipping on $25+ or with Prime. Microcenter has it for the same price w/ limited in-store pickup.
The Wyze Scale measures and tracks body fat, lean body mass, heart rate and 8 other metrics, and works with many popular fitness apps.
The pictured 40-Serving Nuun Sport Electrolyte Drink Tablets (Tropical) is on sale for $17 - 5% off with Subscribe & Save (can cancel at any time) = $16 with free shipping on $25+ or with Prime.