HART X2 Smart Ring | Unisex Fitness Tracker for Sleep, Recovery, Stress, Workout, Calories & Live HR | 8+ Days Battery | Buy Sizing Kit First | Titanium | (Gunmetal Black, 9)
From the brand [FIND YOUR PERFECT SIZE BEFORE YOU BUY] – FITTR HART X2 Smart Ring sizes are different from other smart ring sizes. First, purchase a ring sizing kit, wear it for 24 hours, and then choose your appropriate size before purchasing the HART Ring X2. Available in 8…