Dongguan Hongyuanli Electronic Technology Co., Ltd Introduction to the main functions of the new wired English version 668 wired (19 functions) Total mileage, average speed per trip, calorie clock display, maintenance tips Menu loop display sleep clock display tire circumference setting Choose between measuring temperature in public/private areas Cycling time: Automatic wake-up, battery replacement, data storage (20 seconds), backlight function (user selection) Real time cycling speed display, speed comparison prompt, no cycling for 300 seconds, low battery mode