Best Buy trims up to $30 off Fitbit activity trackers

Fitness bands created by Fitbit, Garmin and others lack the array of features found in smartwatches but offer simplicity and ease of use that have struck a chord with consumers.

Fitbit is still the top player among wearable devices. In the first quarter, sales of Fitbit devices rose to 4.8 million from 3.8 million a year earlier. However, Fitbit's market share slipped from 32.6 percent to 24.5 percent over the same period due to challenges from rivals such as Xiaomi, Apple and Garmin.

The Charge HR fitness tracker features heart rate monitoring, nutrition tracking and automatic activity and sleep tracking. The device offer five days of battery life and is compatible with Apple iPhones, Android phones and Windows phones. The device also works with a variety of third-party apps.