Product Features:

• Ring size: 11.

• Tired of sports watches and looking for a change? This smart ring from Green is the perfect choice.

• Made of stainless steel.

• Tracks calories .. steps and distance .. heart rate .. sleep monitoring .. blood pressure .. and blood oxygen levels.

• Comes with a small box for magnetic storage and charging of the ring.

• Once you download the QRing app .. you can fully control the ring.

• The ring's battery can last between 5 to 7 days.

• Compatible with Android 5.1 and above .. and iOS 8.0 and above.

Warranty: One year