I purchased this here and used it a few times indoors. It's small, easy to carry, and cute. Product Size: 8 depth x 14.8 width x 10.8 height cm The following is the description... 【Various Tones】With Clean/Original/BASS/Overdrive Volume/Distortion/Solo, you can create your own original sound with multiple channels and EQ settings. 【Two 2.5-inch Full-Range Speakers】Gain, volume control, and multiple tones are also available, and reverb, delay, and chorus effects are also included, which can significantly improve the sound quality. 【Bluetooth Connection】Music can also be played as a Bluetooth speaker. Equipped with a full-range speaker that supports bass and acoustic guitars, it achieves deep bass and clear treble, and supports various styles of music. 【OTG Internal Recording】Equipped with a high-performance sound card, you can connect your smartphone and device directly to exchange data. Also, headphones can be connected, so you can practice silently anywhere without disturbing others. 【High Versatility】Compatible with wooden guitars, electric guitars, bass guitars, etc.