Health Wristband by phyode - $95

Kickstarter limited edition. http://www.phyode.com/shop.html
Unused and brand new. New price: 190 dollars

W/Me is a revolutionary product. It uses the Life Spectrum Analyzer to detect your body's harmonic frequency. With our deep analysis tool, W/Me can learn the dynamic shift in your autonomic nervous system. Through our complex algorithm, it can calculate how your sympathetic and parasympathetic system is doing (That's the part of your body that controls the involuntary responses and also your fight or flight reflexes).

A health wristband that can measure your heart rate variability, infer your Autonomic Nervous System agility, and display your mental state to let you know your inner-self. It can also coach rhythmic breathing exercises and help you improve your body condition.

W/Me Wristband requires free app to function properly, please download the app "WMe" on your mobile device. SYSTEM REQUIREMENTS: iOS 6.0+, iPhone4S+, iPod Touch 5th+, iPad 3rd+, or iPad mini.
Compatible with following Android devices (keep updating)
-- Samsung Galaxy S4 with Android 4.4
-- Infocus IN810 with Android 4.3
Embedded LSA sensors that detect your EKG, heart rate, and breathing.
Multiple colored wrist straps available.
Simple, clean ergonomic design for everyday use.
Easy-to-read LED display.
Bluetooth 4.0 sync with your iOS and will soon be available for Android devices.
LED and vibration notification features for everyday life.
Fit and size
--Wrist width: < 2.5in (60mm)；Wrist circumference: 6 in-7 in (155-175mm)