This Sony ULT FIELD 3 Bluetooth speaker packs a real punch. It kicks out a powerful, detailed sound and you can shape it to your liking with the 7-band EQ. Want a bit more oomph? Just hit the ULT button for an extra bass boost and increased sound pressure. Its compact design and removable shoulder strap make it easy to take anywhere. Perfect for road trips or chilling in the park. And with 24 hours of battery, you can enjoy your tunes all day and night without reaching for the charger.Good to know- It's IP67 rated so it's waterproof, dustproof and ready for any adventure- A 10 minute quick charge gives you an extra two hours of playtime- Sound Field Optimisation technology detects noise and adjusts the audio for clarity- Quickly connect two ULT FIELD 3 speakers with Stereo Pair and double the sound- Echo Cancelling technology makes sure your calls are crystal clear, no matter where you are