Jaybird RUN True Wireless Headphones for Running, Secure Fit, Sweat-Proof and Water Resistant, Custom Sound, 12 Hours In Your Pocket, Music + Calls (Jet) Jaybird RUN true wireless earbuds give you a secure comfort-fit, no matter the shape of your ear, with interchangeable tips and fins Sweat all you want, push yourself in the rain, and get muddy. Jaybird run running headphones are Sweat-proof and water-resistant You 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 missing. Impedance- 16 Ohm.Speaker sensitivity- 103 +/- 2dB at 1KHz.Output max. 12mW RMS (with level limit) 12 hour battery life in your pocket and fast charging on-the-go - true wireless earbuds make running with music feel Limitless. 4 hour play time + 8 hour charge case. Output: 12mW RMS (with limit level) Jaybird run gives you true wireless earbuds with a mic and a single control button, so you can power your run without breaking focus