The Myo armband is a one-size-fits-all device, designed for ages 12 and up.
Compatibility: Windows 7 (and higher), Mac OX 10.8 (and higher), iOS 7 (and higher), Android 4.3 (and higher).
Device weight: 9 ounces.
Product dimensions: 4.7 x 2.9 x 4.1 inches.
Batteries: 2 Lithium ion batteries required (included).
Device includes: 1 Standard Micro-USB Cable, 1 USB Bluetooth® Adapter, 10 Myo Sizing Clips.