20 Soothing Sounds : Sleep by Saregama Carvaan provides 20 soothing sounds. These sounds will help you mask disruptive environmental noises & help you sleep better. Compact & Portable: This portable sound machine is small & light enough to fit in your pocket, bag, or suitcase. It also comes along with a carry-on silicone strap, with a built-in rechargeable lithium-ion battery guaranteeing upto 8 hours of battery life, this sound machine is ideal for business or travel. 3 Auto-Off Smart Timer: It can be programmed to turn off automatically after 15 / 30 / 60 minutes. You can select any sound you want and set a timer as per your convenience. Featuring only three buttons, these operations are made very simple. Headphone Jack: You can also connect your wired headphones / earphones with the help of the 3.5mm earphone jack on the unit, bringing you a different, more comfortable listening experience– allowing you to create a pleasant sleeping environment in a crowded and noisy place by blocking all interference in a way that will not disturb others.