The dimensions for the Travel Mini are 2.5"L x 2.5"W x 1.77"H. We will have the sounds files uploaded to the website very soon. The main differences between the Travel Mini and the Rohm/Hushh are the dimmable nightlight feature, available sound options, and size. The Travel Mini is slightly smaller in size than the Rohm and Hushh and offers 6 different sound options as opposed to the 3 sound options available on the Rohm/Hushh.
Yogasleep Customer Experience
The battery is a rechargeable lithium ion battery. I hope that helps to answer your question and if you need further information please let us know. Thank you.
Yes, you can use the new Travel Mini with or without the nightlight. It is optional. Please let us know if you have any other questions.