The Garmin Rally XC100 Single-Sensing Power Meter is a high-quality outdoor pedal power meter designed specifically for cycling enthusiasts. With a sleek design and a weight of 451 g, this power meter operates on batteries and provides accurate power output measurements. The model XC100 is ideal for those looking to track their performance and energy efficiency while cycling outdoors. Garmin's reputation for producing reliable and durable sporting goods makes this power meter a solid choice for serious cyclists.