Net weight: 330 g Allinone portable player with CD playback, Bluetooth transmission, loop playback, TF card support, and 3.5 mm audio output. It supports CD, CDR, CDRW, MP3, MA, and AV formats. Builtin 2000 mAh battery for long life. Light and compact body. concerned chemical: None Size: 138 x 165 x 25 mm Key benefits Convenience in one device: Combines CD playback, Bluetooth streaming, looping playback, TF card playback, and 3.5 mm audio output for versatile listening without multiple gadgets. Broad compatibility: Supports CD, CDR, CDRW, MP3, MA, and AV formats, plus TF card playback for flexible sources. Wireless and wired options: Bluetooth transmission for wireless speakers or headphones, and a 3.5 mm output for direct connection to external speakers or headphones. Portable and durable: Builtin 2000 mAh battery provides extended use, with a light and compact form factor for easy transport. Compact dimensions: 138 x 165 x 25 mm and a weight of 330 g, designed for onthego use without bulk. Use scenarios Home or dorm listening: Pair with a Bluetooth speaker or wireless headphones for convenient, wireless playback from CDs or MP3/MA/AV formats. Travel or outdoor use: Carry with ease and use TF card playback for offline music. The builtin battery supports long listening sessions without frequent recharging. Quick setup with external audio: Use the 3.5 mm output to connect to external speakers or car audio systems for enhanced sound during workouts, study sessions, or commutes.