Notes: The OPT90 cassette speaker blends retro aesthetics with quality and portability - Bluetooth-compatible, lightweight and compact, and capable of 6 hours of continuous playback at full volume. An ideal choice of portable speaker anyone would enjoys a more nostalgic aesthetic. The cassette case can be used as a stand which when closed can change the sound quality, lending the music a more classic, lo-fi touch. The OPT90 is also compatible with SD cards.
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