Vaaka is a first of its kind kayak cadence sensor which enables paddlers to see their strokes per minute live while in the boat. It communicates directly with Garmin’s forerunner and Edge GPS watches and with any GPS device that receives and interprets ANT+ wireless technology. Vaaka is light weight (55g) easily attaches in seconds onto any paddle, split or one piece and starts transmitting cadence information as soon as it starts moving. So what is so great about Vaaka? – Ease of use with quick attachment to any paddle and easy transfer to alternative paddles when required. – Real time cadence feedback while paddling. – Integration with ANT+ compliant sports GPS watches such as Garmin and Timex. – Ability to combine cadence with GPS data such as speed and distance and with other ANT+ data such as heart rate. – Hassle free function. Once paired with your ANT+ device will turn itself on and off automatically. – Very low power usage. With daily use, one standard AAA alkaline battery will last up to 12 months. Bluetooth version You can now buy the Vaaka sensor bluetooth version for bluetooth compatible GPS device, e.g. Polar V800 watch, Suunto Ambit 3, Apple iphone and apple watch, and most modern android smartphones.