Whether we are training for race season or just want to get a better grip on our performance, the the 4iiii Shimano 105 R7000 PRECISION 3 Left-Side Power Meter is one of our favorites for keeping track of our workouts. The 4iiii Shimano 105 R7000 PRECISION 3 Left-Side Power Meter has Bluetooth and ANT connectivity, so we can sync our workouts with our cycling computer or training apps. The power meter can track watts, cadence, cycling metrics, calories, left/right balance, pedal smoothness, and torque effectiveness for complete performance metrics. This power meter has a 800-hour battery life, so we never have to worry about running out of battery, and is IPX7 waterproof-rated so we can track our stats no matter the weather. Apple Find My capability allows us to keep track of our bike when we aren't with it, and an Automatic Terrain Selector reads the terrain we are on and offers a more responsive cadence and power feedback/data.