Closed-back headphones – Bluetooth – Built-in microphone – Volume control – Foldable – Driver size: 32 mm dynamic drivers – Power supply: 5 V / 1 A – Lithium polymer battery (610 mA / 3.7 V) – Frequency response range: 20 Hz/20 kHz – Impedance 32 ohm – Sensitivity 100 dB SPL at 1 kHz/1 mW SPL max: 96 dB – Bluetooth 5 – Bluetooth profile version: A2DP v1.3, AVRCP v1.5, HFP v1.6 – Bluetooth frequency: 2.402 GHz – 2.480 GHz – Maximum operating temperature: 45 °C – Active noise cancellation eliminates noise and lets you enjoy music. JBL Pure Bass sound: For over 70 years, JBL has developed the precise and impactful sound of major music events worldwide. These headphones deliver the same JBL sound, producing deep and powerful bass. Up to 44 hours of battery life with active ANC. Listen to music wirelessly for 44 hours with active noise cancellation for long-lasting enjoyment. Or up to 55 hours with just BT. Get 2 extra hours with a 5-minute charge via USB Type-C. Endless fun with the included cable. Hands-free calls and voice assistant: Easily control sound and manage calls from your headphones with the microphone and button control on the earcup. Or use the button on the earcup to call your voice assistant. Wireless Bluetooth streaming: Stream high-quality sound wirelessly from your smartphone or tablet without cables thanks to Bluetooth 5.0. Lightweight and foldable design: Lightweight materials make the headphones comfortable to wear, and the sturdy structure allows them to be folded and unfolded over the years without damage. Active Google Fast Pair: Quickly pair the JBL Tune 660NC headphones with your Android device thanks to active Google Fast Pair. Your music, without noise. Tune 660NC headphones with noise cancellation for exceptional sound without noise! Enjoy JBL Pure Bass for up to 35 hours and recharge in no time (5 minutes for 2 hours of extra charge). Battery dead? Connect the cable to keep dancing. Quickly pair them with your Android device thanks to Google Fast Pair. Use the buttons on the earcup to control sound and calls and keep your device in your pocket. Choose the color that best fits your mood. Lightweight and foldable, you can put them anywhere and they’ll always be ready to brighten your day.