Philips Wireless Headphones 4000 Series boast a BASS boost button, so you can pump it up whenever you like. You get up to 29 hours of play time, quick charging and stylish matte colours to choose from. Headphones boast powerful 32 mm neodymium acoustic drivers that give you crisp sound and rich bass. When you want more, simply press the BASS boost button and you'll feel the difference instantly. 29 hours of play time. USB-C charging You get up to 29 hours of play time from a 2 hour charge via USB-C. If you start running low on power, a quick 15 minute charge will keep the music playing for another 4 hours. Available in stylish matte colourways, these on-ear headphones boast a cushioned headband that's so light you'll barely feel it. The soft ear cups are clearly marked for left/right ears and can be angled until they feel just right. Real compact foldable, which is excellent for travel and lets you take your music anywhere.