If you like, you can set five heart rate zones (they're customisable) on the Velo itself via the Mio Go app. As long as you're not out on a very, very long ride, that's probably not much of an issue.Īs mentioned, the Velo can send data via both Bluetooth Smart 4.0 and ANT+ so you can see your heart rate on a wide variety of different devices: bike computers, GPS watches and smartphone apps like Mio's own Go app, Strava, Endomondo, and so on. The optical sensing takes quite a lot of power so you get only about eight hours of use before you need to recharge the lithium polymer battery via USB. I did experience some interference when transmitting data from the Velo to a Garmin Edge 500 computer during a group turbo session, but I've had no problems at all out on the road. Plus, I used it equally successfully on each wrist, so you can swap from ride to ride if sensors trouble your skin, for example. The fact that it's a wrist-mounted device might be welcome to people who don't get on with chest straps. I found it as straightforward to use as a regular chest strap and accurate from the first ride, in all temperatures. I've had no problems with getting the Velo to read and transmit heart rate. A flashing light lets you know that it's picking up your pulse. You strap the Mio Velo around your wrist (it fits wrists from 15cm to 21cm in circumference), just higher than where your watch is or would be. In other words, they claim that it is highly accurate. Mio boast a 0.99 correlation to electrocardiogram in laboratory testing. It takes your heart rate via LEDs and an 'electro-optical cell' that monitors the volume of blood under your skin. The Mio Velo comprises a silicone strap containing a 46mm x 25mm x 10mm working unit. It can also take data from other ANT+ devices – a speed and cadence sensor, for example – and re-transmit it using Bluetooth Smart, allowing you to link ANT+ sensors to a non-ANT+ smartphone.
The Mio Velo measures your heart rate from your wrist and sends it to other devices via both Bluetooth Smart 4.0 and ANT+.
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