fitniv portable white noise machine, 20 soothing soundtracks sound machine for baby & 5 timer functions, built-in battery support 70 hours playtime, compact design for on-the-go use & travel, grey fitniv <b>what is effective with the fitniv sleep sound machine?</b><br> 1) calm your baby down and lull them to sleep.<br> 2) masks blocking all disturbances.<br> 3) creates a peaceful environment in a crowded, noisy environment.<br><br> <b>functions:</b><br> 1. 20 soothing sounds:<br> 2. rechargeable and portable<br> 3. 5 timers: 15/30/60/90/120 min<br> 4. headphone jack<br><br> <b>specifications:</b><br> model: t2<br> audio output: 3w<br> battery capacity: 3.7v 2000mah<br> battery type: rechargeable lithium battery<br> battery lasting: about 70 hours<br> charging voltage: dc 5v<br> charging time: 3.5 hours<br> device dimension: 97*97*36mm<br><br> <b>what comes with your package:</b><br> 1 × sleep sound machine with lanyard<br> 1 × charging cable (without adapter)<br> 1 × user manual