Jaybird RUN true wireless earbuds give you a secure comfort-fit, no matter the shape of your ear, with interchangeable tips and finsSweat all you want, push yourself in the rain, and get muddy. Jaybird run running headphones are Sweat-proof and water-resistant and sensitivity is -38dB +-3dB (test conditions- 1KHz, 0dB = 1V/Pa),frequency band is 2.4 GHzYou can customize your sound by adjusting the lows, mids, and highs to pump up your true wireless Sport experience. The Jaybird app can locate your buds if they go missing12 hour battery life in your pocket and fast charging on-the-go - true wireless earbuds make running with music feel Limitless. Impedance - 16 Ohm.Speaker sensitivity - 103 +-2dB At 1KHzJaybird run gives you true wireless earbuds with a mic and a single control button, so you can power your run without breaking focusNOTE: Refer the User Manual before use.