Garmin has a new wearable, the vivosmart 3 fitness tracker. As well as VO2 max and heart rate tracking, the device is said to be able to measure stress. The display is a monochrome OLED with 64 x 128 pixels and 9.6 x 19.2mm. Battery life is five days. As well as recording heart rates, data can be transmitted to ANT+ devices. Weight is 20.4 gms for the small/medium, 21.5 gms for the large.
Pricing is $139.99 and availability is 5-8 weeks.