Mini Size - OpenRun Pro Mini has a 0.83 inch shorter band size than OpenRun Pro. If the back of your head's measurement from the left to the right ear is 9.25 inches or less, OpenRun Pro Mini is your better choice. Open-Ear Comfort - OpenRun Pro Mini features our best fit yet. Avoid the discomfort of in-ear headphones with our bud-free design. These headphones stay put during any workout. Includes Shokz headband. Safety & Connection - OpenRun Pro Mini ensures you enjoy your favorite audio with awareness of your environment for improved connection and safety compared to traditional earbuds or over-ear headphones. Premium Sound Quality - Experience premium audio delivered through your cheekbone with our 9th bone conduction technology. Engineered with Shokz TurboPitch technology, OpenRun Pro Mini headset features our best listening experience with clear sound, powerful volume, and a rich bass. Secure Fit - A lightweight, wraparound titanium frame keeps your wireless headphones stable and in place during intense training. 10 Hours of Music & Calls - Enjoy ten continuous hours of music, calls and podcasts with our Bluetooth headphones. OpenRun Pro Mini also features a 5-minute quick charge for up to 1.5 hours of battery life.