Wearable sweat sensor could monitor dehydration, fatigue
iF Design - Sixty Hydration Monitor
Amazon.com: Three Drops of Life 64oz Hydration Tracking Large Sports Water Bottle, The Largest Time Tracker Sport Bottles, Best Daily Hydration Monitor With Time Reminders : Sports & Outdoors
Body Hydration Monitor
Sixty
CapoVelo.com - BSX Technologies to Launch the First Ever "LVL" Wearable Hydration Monitor