SpecificationsPortable CD Player Electronic Shock Protection (ESP) : up to 120 secs ANTI-SHOCK Playback Resume Function for Audiobook CDX-HyperBass Low Frequency Enhancement Booster Rotary Volume with Digital High-Volume Limiter (Normal / High) DC/Rechargeable Use:Micro USB (5V) or AAx2 (3V) with Battery Recharge Switch Repeat/Random Music Playback Functions Key Lock FunctionHigh Contrast Alpha-Numeric Liquid Crystal Display (LCD) MICRO-USB Port Built In (AC-Adaptor/Charger not included)Accessories included: Metal in-ear Deep Bass Acoustic Stereo earphones, Zipper case, Braided Nylon Micro-USB Power/charging cable, 2X NiMh 1500mah rechargeable batteriesNet Weight: 193g CD/CD-R/RW MP3 disc playback with 20 programmable memories Stereo Earphone Jack (3.5mm) Built In