Endurance Run 2 Wireless Never Hurts and Never Fall Out. Results matter and when you have the perfect headphones there’s nothing standing in-between you and your workout. Streaming wirelessly, the JBL Endurance Run 2 wireless will get you the motivation you need to push harder with powerful JBL sound. With their Flip - Hook design, they adapt to an in-ear or behind-the-ear fit for added convenience. A comfortable combination of FlexSoft ear tips and TwistLock technology means these buds are guaranteed never to hurt or fall out. Thanks to IPX5 waterproof, JBL Endurance Run 2 wireless headphones keep up with your every step so sweat or rain will not ruin your workout. With a playback of 10 hours, the JBL Endurance Run 2 wireless feature an in-line microphone and remote for hands-free control of sound and calls. The magnetic buds secure your JBL Endurance Run 2 wireless conveniently around your neck while not in use. Enjoy your workout! Specification Driver Size 8 mm Number of Microphones 1 Driver Sensitivity at 1kHz/1mW 99 d - B Dynamic Frequency Response Range 20 Hz - 20 k - Hz Impedance 16 ohms Earpiece Weight 19.7 g / 0.70 oz Bluetooth Profiles A2DP V1.2, AVRCP V1.5, HFP V1.5 Bluetooth Frequency 2.402 GHz - 2.48 GHz Bluetooth Transmitted Modulation GFSK, π/4 DQPSK, 8DPSK Bluetooth Transmitter Power 0-4 d - Bm Bluetooth Version 5.0 Charging Time (hours from empty) 2 Maximum Play Time (hours) 10 Bluetooth Yes Charging Cable Yes Remote Control in Cable Yes Voice Assistant Integration Yes Built-in Microphone Yes