Dobry den, hodinky mi uplne zle zaznamenavaju prejdene km ( miesto cca 17 km 28km. Nemate niekto skusenost s podobnym problemom?
Garmin Forerunner 645 Sandstone

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Garmin Forerunner 645 Sandstone
The Forerunner 645 smartwatch is not only useful during running. In addition to advanced sports features, it is equipped with modern technology, a very durable construction and an elegant design. You can use it to your advantage during outdoor activities as well as in regular training and in everyday life. It is equipped with a classic control button, a nice colour display and an optical heart rate sensor. It is even ready for cashless payments, and integrates GPS and Glonass along with other technologies. It is perfectly waterproof. You can choose from several colour variants of this watch and a "music" version, which has a built-in flash memory for storing your own music and connects to select streaming services.
Key Features of the Garmin Forerunner 645 Sandstone Smartwatch
- High-quality waterproof finish and colour display
- Profiles for running, cycling, swimming, elliptical, paddle sports, strength training, etc.
- Optical heart rate sensor
- Powered by wireless technology
- Receive notifications from your phone
- Barometric altimeter (floor counting)
- Advanced training features
- Up to 7 days battery life in smartwatch mode
- Compatible with external sensors, VIRB cameras and Varia accessories
- Allows cashless payments
- Interchangeable strap
Proven Controls with Modern Features
With most of its smartwatches, Garmin favours the use of classic buttons, and the Forerunner 645 Sandstone is no exception. This system has the advantage of allowing demanding training in the rain, in winter or during swimming, situations where many modern touch controls fail. It is also worth mentioning an integrated barometric altimeter that can accurately measure not only the altitude, but also the speed of the climb.
What makes smartwatches clever are their multi-sport functions. The Forerunner 645 offers individual profiles for running outside or on the treadmill, cycling indoors or outdoors, swimming, elliptical training, paddle sports, strength training and a host of other sports. It is also equipped with WiFi, Bluetooth, ANT+ and NFC technology. You can dive with it without fear because it withstands water pressure up to a depth of 50m. This is not the most advanced Garmin model, so it is important to note that it is unable to measure your heartbeat while swimming, does not have a special feature for outdoor swimming or golf, and cannot be connected to cycling power metres.
Specifications
Purpose and compatibility
Display
Design and durability
Connectivity and sensors
Functions
Software
Battery life and storage
Garmin Würzburg GmbH, Leightonstraße 7, 97074 Würzburg, Německo, www.garmin.com, [email protected]
Specifications can be changed without notice. Images are for illustrative purposes only.

