Mio Alpha heart rate monitor is a top selling strapless smartwatch programmed to also track sleep patterns and other activities. The device is built on a revolutionary new metric for continuous performance monitoring, providing guidance on sustaining optimal health and is suitable for intense exercises. Chest strap is not needed as it is conveniently worn on the wrist or upper arm. It has a rechargeable battery that last up to 24 hours, waterproof and Bluetooth 4.0 compatible.
Comfortable to wear
Battery life may be a cause for concern