Based on this product's specifications, here are some alternatives and similar models
Harman/Kardon Onyx Studio 9 stereo portable speaker — 50 W, 3.0 channels, USB-C, wireless, black/grey
Summary description:
Harman/Kardon Onyx Studio 9 is a round stereo portable speaker with 3.0 audio channels and 50 W RMS output. It features a 12 cm woofer, 2 cm tweeter, frequency range 50–20,000 Hz and SNR 80 dB. Wireless connectivity with USB Type‑C charging, AC or battery power and 2 m cord makes it suitable for home, small gatherings and portable audio playback of MP3 files.