Meet the iChoice Star Activity Tracker: a wearable device with BMI management and step tracking. It can also record and analyze your sleep quality. The device is compatible with iOS and Android devices. The device lets you set goals, view progress, and share it with friends. You can wear it like a watch or put it in your pocket. The battery life lasts you 7 days (in standby mode). This activity tracker is water resistant. Sets you back $39.