Internal dimensions: 47 x 31 x 38 cm

this is your perfect choice

The covering is designed so you can talk and hear right through the case

OUT OF CARTON DIMENSIONS: 19CM H X 28

Beach Hat is a standard size

WAHOO Trackr Heart Rate Monitor retail-link-11-12-2023 Internal dimensions: 47 x 31With the Trackr Heart Rate, WAHOO is launching the first heart rate monitor among the major manufacturers on the market that relies on a high capacity, integrated lithium ion battery instead of a button cell. This protects the environment and makes the sensor less susceptible to damage. Thanks to the Multiple Peripheral Bluetooth function, the Trackr Heart Rate can maintain up to 3 parallel Bluetooth connections at the same time. Easily visible LEDs