The Cat Eye Micro wireless cycling computer with universal handlebar/stem mount is Cat Eye’s most popular wireless computer. This Micro comes with ten functions and 12 features, including LED backlight, manual odometer re-set and a bracket that will mount on both stem and handlebar. Universal handlebar/stem mount, fits up to 31.8mm bars and most stems. Functions include speed, total distance, trip distance, clock, ride time, maximum speed, average speed and auto start/stop. Specifications. Battery: CR2032 (main unit and sensor). Handlebar mount size: 22-32mm. Fork mount size: 11-50mm. Front fork speed sensor. Wireless transmission distance up to 70cm – 27inches. Tool-free spoke magnet.