Veridian Healthcare iHealth Digital Scale - Wireless Body Analysis System reads and records your weight, body fat, lean mass, muscle mass, bone mass, body water, BMI and visceral fat rating on your iPod Touch, iPhone and iPad devices and emails your results directly from the App. Supports up to 20 users; Suitable for all ages; Measurement units: lbs/kgs/st; Free iHealth MyVitals App available through the App Store; Batteries included: 4AAA.