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. The chest strap is not needed as it is conveniently worn on the wrist or upper arm. It has a rechargeable battery that lasts up to 24 hours, is waterproof, and is Bluetooth 4.0 compatible.
Comfortable to wear
Battery life may be a cause for concern