The Sony WF-XB700 feature EXTRA BASS for seriously powerful, punchy low-end sound. Your favourite basslines never sounded so good.You can enjoy up to 18 hours of listening thanks to the handy charging case, and if you are in a hurry, 10 minutes\' quick charging will give you up to 60 minutes of music playback.With an IPX4 rating, splashes and sweat won\'t stop these headphones so you can keep on moving to the music. The WF-XB700 earbuds are ergonomically designed to make contact with three different points on your ear for a secure, comfortable fit.A Bluetooth chip, which transmits sound to left and right ears simultaneously, coupled with optimised antenna design ensures a stable connection and outstanding listening. Low audio latency makes for enjoyable viewing too.A simple button press connects you to your smartphone\'s voice assistant to get directions, play music, and communicate with contacts.With the built-in microphone conversation flows freely with easy hands-free calling. There is no need to even take your phone from your pocket.They come with 4 sizes of hybrid silicone rubber earbuds included so that you can find the perfect fit for your ears to maximise sound quality and minimise outside noise.FeaturesEXTRA BASS for deep, punchy soundTruly wireless design with Bluetooth wireless technology9hr long battery life, total 18hr with charging caseErgonomic design for a secure, comfortable fitEasy hands-free calling and voice assistantSpecificationsHeadphone Type: Closed, dynamicDriver Unit: 12mm Frequency Response (Bluetooth Communication): 20 Hz - 20,000 Hz (Sampling frequency 44.1 kHz)Battery Charge Time: Approx. 2.5 hrsBattery Charge Method: USB charging (with Case)Battery Life (continuous music playback time): Max. 9 hrs Battery Life (continuous communication time): Max. 5 hrs Battery Life (Waiting Time): Max. 200 hrs Bluetooth: Line of sight approx.30ft (10m)Charging Case: Battery Charge Time - Approx. 3 hrs