Fun to have. The feature set is good, while the user interface takes a bit getting used to. The thermometer and wind chill meter are useful extras. Ditto the peak, average and current measurements.
The meter works well when measuring winds above 5 mph. However, when trying to measure the wind speed over the pool, the meter sometimes would not spin up. The spec says it can measure down to 0.44 mph. My device won't register less than 1.5 mph, and I have no idea how accurate it is at that point.
After some exposure to wind (what a novel concept for a wind meter!), the fan bearings wear out. It gives out a screeching sound in high winds (above 10 mph), and measurements are probably inaccurate.
It uses up the battery also when turned off. After about a week in off position, the battery is dead. So make sure to take out the battery after each use.