1. **Compact and Stylish Design**: The Fitbit Flex 2 is praised for its small size and sleek design, making it a favorite for those who prefer a minimalist look. It's also waterproof, allowing users to wear it while swimming.

2. **Versatile Band Options**: Users appreciate the ability to switch bands easily, offering a customizable look to match different outfits or occasions.

3. **Basic Tracking Features**: While it lacks advanced features like stair tracking and detailed sleep analysis, the Flex 2 excels in basic step counting and providing call/text alerts, helping users stay connected without constantly checking their phones.

4. **Durability and Longevity**: Many users report that the device is durable, with some having used it daily for over four years without issues.

5. **Charging Concerns**: A common complaint is the need to charge the device every other day, which can be inconvenient for some users.

6. **Potential Defects**: There are isolated reports of defective units that cannot be charged or updated properly, leading to frustration and returns.

7. **Ease of Use**: The simplicity of the Flex 2 is a major plus for those who want straightforward activity tracking without the complexity of more advanced models.

8. **Customer Service Issues**: Some users found the return process cumbersome, especially for older customers who may not be as tech-savvy.