The Sigma BC 5.0 WL ATS bike computer is a wireless entry-level model designed for commuters, recreational cyclists, and families, including children's bikes. The compact device measures 27 x 35 mm and offers five essential functions: current speed, daily distance, riding time, total riding time, and total distance. It utilizes Sigma's proprietary wireless transmission technology with a coded signal, eliminating the need for cables between the fork-mounted speed sensor and the handlebar-mounted display unit. The large, clear display prominently shows the current speed, while four distinct symbols indicate the selected secondary function in the lower line, ensuring excellent readability. Operation is simplified with a single large button that allows for safe function switching while riding. Installation is straightforward with included cable ties for the mount and sensor. The device supports wheel sizes from small children's bikes to 29-inch models (74 cm), either with predefined tire circumference settings or manual millimeter-accurate input. Powered by a single CR2032 button cell, which typically provides over two years of operation, this bike computer is water and weather-resistant for reliable daily use. The ergonomic design combines a large button with a generous display for intuitive operation. The automatic measurement of riding time and distance makes it suitable for complete bike tours or family cycling vacations. As part of the Sigma Originals series, this model emphasizes reliability and straightforward functionality for cyclists seeking essential performance data without complexity.