1200mAh Rechargeable Battery: The portable personal CD player features a 1200mAh lithium battery, eliminating the need for AA batteries. It can be charged via the included USB cable in approximately 4 hours, offering portability and convenience for music enjoyment anywhere and anytime. Multifunctional Features: This CD player offers modern features including: DIR (Directory Navigation): Allows for repetitive playback of all MP3 files. 4 Play Modes: Includes repeat track, repeat all, directory (DIR), introduction (INTRO), and shuffle (SHUF). Enhanced Compatibility: Compatible with a variety of formats: CDs, MP3 CDs, CD-Rs, and HDCDs. Includes a 3.5mm AUX input for connecting to speakers, headphones, or car audio systems, providing versatile options for music playback. Perfect as a Gift: Compact and lightweight, in classic black with a smooth appearance and clear LCD display. Ideal for music enthusiasts, language learners, and expectant mothers. A thoughtful gift for friends, family, and children. Key Lock Feature: After setting the playback mode and sound effects, you can switch the power to the HOLD position to prevent unintended changes, ideal for environments with active children or crowded spaces. Specifications: Power Supply: DC 5V/1A, Micro-USB 2.0 Standard Charging Voltage: DC 5V/1A Operating Voltage: 3.7V Power Consumption: Approximately 1.5W Battery: Li-Ion Polymer, 3.7V/1200mAh D/A Conversion: 16-bit Sampling Frequency: 44.1kHz Frequency Response: 20Hz - 10kHz Headphone Power Output: 16mW + 16mW @ 16-32 Ohm Headphone Impedance: 32 Ohm @ 16mW Supported Disc Formats: CD, CD-R, HDCD Material: ABS Size: 133 x 133 x 27mm Package Contents: 1 x Portable CD Player 1 x 3.5mm to 3.5mm AUX Cable 2 x Headphones 1 x USB Cable Reminder: 1. Please turn off the HOLD key before use. 2. Avoid touching the lens; keep the disc compartment closed to prevent dust accumulation. 3. This player supports CD, CD-R, MP3, and HDCD formats only. 4. Clean optics with a standard commercially available cleaner if the device cannot scan discs correctly 5, Use a clean damp cloth for device cleaning; avoid cleaning agents. 6. Ensure the power supply and charging voltage are DC 5V/1A during charging to prevent damage from excessive voltage input