JBL Signature Sound and surround sound Along with powerful JBL Signature Sound, the 40mm drivers offer immersive JBL Spatial Sound that turns any stereo content from any device into virtual surround sound. Bluetooth 5.3 with LE audio supported (*) Wirelessly stream high-quality sound even at lower bit rates with the help of the latest Bluetooth technology.  Audio Mode gets you the best available sound, while Video Mode makes sure the sound and visuals of your movies and games are always in sync. (*) Available via OTA update at a later stage. True Adaptive Noise Cancelling with Smart Ambient With four noise-sensing mics, True Adaptive Noise Cancelling means zero distractions, whether it's time to focus on your studies or get lost in the groove. And if you want to hear the world around you without removing your headphones, Smart Ambient sharpens the sounds of your surroundings. Features Up to 65 hours* of battery life and speed charge For long-lasting fun, listen wirelessly for up to 50 hours and recharge the battery in as little as 2 hours with the convenient Type-C USB cable. And if you're in a hurry, a quick 5-minute recharge gives you 4 additional hours of music. (*Battery life: BT on / ANC off) Auto play and pause Take the headphones off, the music stops. Put it back on, the music starts again. It genuinely couldn't be simpler. Ask Alexa or Hey Google Alexa or Hey Google is always standing by. Activate your device's voice assistant just by using their hotword or tapping the earcup. Multi-point connection Effortlessly switch from one Bluetooth® device to another. Jump from a video on your tablet to a call on your mobile phone, and never miss a moment. Seamless connectivity with any device Whether you're using an Android or Windows device, it's easy to set up your headphones to automatically pair with it whenever it's nearby. And with the new Google Finder service, if you ever misplace your headband, you've got a network of over 3 million Android pals who'll automatically help you find it. 2 beamforming microphones for calls Your friends, family, and co-workers will hear every word you say—even if you're outside and it's windy. Comfort-fit fabric headband and carrying pouch Soft ear cushions and a textured, fabric headband in earthly shades make these headphones comfortable and unique. And when you do take them off, they have a comfy and protective place to live that's easy to pull out of your bag. JBL Headphones App Control the soundtrack of your life. The free JBL Headphones app allows you to tailor your headphones' preferences, like customizing the ANC, personalize the headphones' behaviors or quickly set up amazingly realistic sound for your movies, music, and games. Personi-Fi 2.0 The My JBL Headphones app personalizes your sound experience just for you. Just take the quick and easy hearing test and it automatically sets up a custom sound profile that's ready to go every time you put on your headband. That's it. Specs Wireless On-Ear Headphones with True Adaptive Noise Cancelling and Smart Ambient, delivering JBL Signature Sound JBL Live 670NC headphones deliver powerful JBL Signature Sound in a comfortable on-ear headband style. When you're deep in your flow, True Adaptive Noise Cancelling with Smart Ambient technology keeps you free from distractions. Then, when you want to keep an ear open to the world around you, you can stay aware as you continue listening to your favorite playlist—or even have a conversation without taking the headphones off. Easily access your preferred voice assistant with a tap on the ear cup to cue up a song, text your friend, check the weather, and much more. You’ll enjoy 65 hours (50 hours with BT+ANC on) of music streaming. And if you still need more, a 5-minute speed charge gets you another four hours. The JBL Live 670NC can connect with two Bluetooth® devices simultaneously, so you’ll never have to miss a call, even if you’re watching a movie on your tablet. Driver size (mm): 40 Number of Microphones: 2 Audio Specifications Driver sensitivity at 1kHz/1mW (dB): 98 Dynamic frequency response range (Hz): 20 Hz – 20 kHz Impedance (ohms): 32 Dimensions Weight (g) 219 Weight (oz) 7.7 Charging Cable Length (m) .2 Charging Cable Length (ft) .7 Ear Cup External Height (in) 2.7 Ear Cup External Width (in) 2.7 Ear Cup Internal Height (in) 1.1 Ear Cup Internal Width (in) 1.1 Ear Cup Depth (in) .8 Ear Cup External Height (cm) 6.9 Ear Cup External Width (cm) 6.9 Ear Cup Internal Height (cm) 2.7 Ear Cup Internal Width (cm) 2.7 Ear Cup Depth (cm) 1.9 Audio Cable Length (ft) .7 Audio Cable Length (m) .2 Control and Connection Specifications Bluetooth version: 5.3 Bluetooth profiles: HFP v1.8, A2DP v1.4, AVRCP v1.6.2 Bluetooth frequency: 2.4 GHz - 2.4835 GHz Bluetooth transmitted modulation: GFSK, π/4-DQPSK, 8-DPSK Bluetooth transmitter power: <13 dBm (E.I.R.P) Battery Charging time (hours from empty): 3 Maximum music play time with ANC off (hours) 65 Maximum music play time with ANC on (hours) 50 Maximum talk time (hours) 33 Maximum play time (hours): 65 Features True Adaptive Noise Cancelling Yes JBL Headphone App Yes Spatial Sound Yes Charging cable Yes Detachable Cable Yes Audio cable Yes Voice Assistant integration Yes Ambient Aware Yes Built-in Microphone Yes Hands Free Call Yes JBL Signature Sound Yes Multi-Point Connection Yes TalkThru Yes Active Noise Cancelling Yes Wireless Yes Speed charge Yes Over-ear No Rechargable battery Yes Bluetooth Yes What's in The Box? 1 x JBL Live 670NC headphones 1 x USB-C Charging Cable 1 x Detachable audio cable 1 x Warranty / Warning 1 x QSG