ISwimBand Personal Aquatic Protection A portable and effective personal drowning detection system  Your iPhone/iPad/iPod Touch* alerts you if a swimmer remains submerged for too long, or if a toddler enters the water without your knowledge or close supervision. Comfortable, lightweight headband can also be used as a goggle strap  Tamper-free wristband fits most toddlers or attaches to pet collars Monitors up to 8 iSwimbands per iOS device and is expandable. Range up to 100 foot/ 33 meters (will depend on environmental conditions) Compatible with Apple iOS7* and greater  Includes free companion iSwimband app with auto-updates via Apple's App Store Developed with the guidance of leading aquatic safety expert  One-time setup takes only a few minutes  Works along with goggles and swimcaps