1＞【SIMPLE & HIGH-END】 With Backlight design which can view the play information more clearly at any time. Simple style highlights the classic fashion, with memory feature. 2＞【ANTI-SHOCK FUNCTION】 Usually when you put your CD in our mini CD player, it will read your CD’s information about 10 seconds, and then the disc will stop rotating, at this moment, your sound music wont be affected by shock for 40 seconds. Then the walkman will keep cycling to work like this way. If yours is MP3 CD, it will have 120 seconds shock protection. Perfect skip protection for your music listening. 3＞【HOLD FUNCTION & EQ EFFECT 】Key buttons protected while listening. It wont have any influence for your listening when you press any buttons of the discman. EQ effect mode includes BBS,JAZZ,ROCK, CLASSIC style. 4＞【WIDELY USE】 1）compatible with CD, MP3 CD, CD-R, CD-RW, CD WMA audio files, AUX connected with all audible devices 3.5mm audio input. 2）The Compact Disc Player powered by power adapter or 2*AA batteries (Not included), perfect for you to carry. 5> 【PERFECT GIFT】 Mu-til-choice for your options to give you the best portable music player. Great gift for you, your family, and your friends, etc. Specifications: Headset cable length:1.05m Dimension:5.6x1x5.6inch Weight:200g Frequency response:20-2000Hz Sampling frequency:8-48KHz AC / DC adapter input: 100 - 240V, 50 / 60Hz, 0.2A ( Max ), output: 4.5V / 0.6A( not included ) Battery: 2 x 1.5V AA/ LR6 batteries(not included ) Package: 1x portable CD player 1x headset(3.5mm) 1x USB Cable 1x User Manual Note: 1. The CD player requires external power adapter or 2 AA batteries (Not included). 2. The device display tells you about the state of the batteries, if the battery indicator flashes in the display, the batteries are losing power. 3. The batteries are switched off during mains operation. Remove the batteries when they are flat or when you know that the device will not be used for a long time. 4. Please turn off the "hold" key at the back of the CD before powering it on. Press the power button to star playing the CD. 5. The keys on the device are locked and LCD will display "HOLD", then disappear. May be misunderstood machine can not boot. 6. "DISC" will appear on the screen if invalid CD inserted. Please replace the CD disc in the supported format. If the disc format is supported, please try restarting the player. 7. The condition of the disc (scratches, debris, cracks, ect.) will impact the performance of the device. (Only support CD disc) 8. The player has not built in a speaker, you need to connect headphones to hear the sound. 9. sudden exposure to high level music may result in hearing loss. The cd player is designed with a default volume when turned on to offer ear protection. Long press the ear button for 3 seconds, the LED display will show “HIGH”, then release the button and press again to increase the volume.