I think this is an updated design of what we have, we own 2. It’s nice because it charges and if power goes out, it still runs, it’s easy to pack, it’s a microUSB charger. Sometimes one of them has the cord wiggle out of place and it doesn’t charge, but it has a red light to tell you it’s charging so I know yo look for it. I think it’s because my kids just poked at it too much. The ocean noise isn’t terrible or sound like a loop either and it has a slot for a microSD card to play music, but I’ve never tried it.

SoundScapes Portable Sound Machine with Solfeggio Tones! White Noise Machine for Sleeping Baby, Kids or Adults. 9 Tones, Night Light, Ocean Soundscape, Fan Noise and Lullaby Sleep Machine https://www.amazon.com/dp/B09BC99P7P/ref=cm_sw_r_cp_api_i_Z0P7BW55NPHAD3H49778