I always prefer headphones with extra bass & loud sound., that's why I bought boat rockerz 400. This is good Bluetooth wireless device in the price range of 1000 - 1500 INR when it's comes to loud sound with outer noise reduction & amazing bass but it's Bluetooth range, tightness & Bluetooth sound quality disappointed me. I can't use it more than 30 minutes because it cause headache ( tight on ear) . If we go one room to another or 15 - 20 feet away., Bluetooth doesn't work properly so it become similar to wired headphones most of the time., It's battery life & extra bass is amazing & the only reason to go with it but if you want to use headphones for long time., it's terrible. So be careful.