3.5mm audio hole. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Made of - materials, and practical.
Stay on Top of Your Workout Progress with Exercise Bike Handlebar Grips
Stay on Top of Your Fitness Goals with this Exercise Bike Monitor
Exercise Bike Grips with Heart Rate Sensor Stay on Top of Your Fitness Goals
