- Description A grab 'n' go solution that sounds great. Featuring JBL Pure Bass Sound, the JBL TUNE 125BT headphones offer a grab 'n' go, lossless wireless solution for your everyday usage along with the ability to make or take hands free calls and 16 hours of battery life. Imagine headphones that quickly charge in 2 hours, come in brilliant new colors, feature a flat tangle free cable and are lightweight enough to comfortably wear for hours on end. And when you combine magnets that ensure the headphones are not dangling when not in use, the multi-point connection that allows you to never miss a call, it’s easy to see how the JBL TUNE 125BT headphones can become an essential part of your day-to-day music loving life. General Specifications Driver size (mm): 8.6Number of Microphones: 1Audio Specifications Driver sensitivity at 1kHz/1mW (dB): 96dB SPL/1mwDynamic frequency response range (Hz): 20 Hz – 20 kHzImpedance (ohms): 16Control and Connection Specifications Bluetooth version: 5.0Bluetooth profiles: HFP v1.5, HSP v1.2, A2DP v1.2, AVRCP v1.5Bluetooth frequency: 2.402GHz-2.48GHzBluetooth transmitted modulation: GFSK, DQPSK, 8-DPSKBluetooth transmitter power: 0~4dBmBattery Charging time (hours from empty): 2Maximum play time (hours): 16