Plays CD/CDR/RW/MP3 with 20 programmable memories. Electronic Anti-Shock (ESP) protection up to 120 seconds. "WAIT" function and special summary for Audiobook CDs. Partial, total and random repeat functions. Sound quality X-HYPERBASS (Special Bass System). Volume control with digital limiter (Normal/High). Key lock function. High contrast alphanumeric LCD display (LCD). Headphone connection (3.5 mm). Battery charging function via MICRO-USB port (AC adapter not included). Power supply: DC 5V 1A, Rechargeable batteries (AAx2) or Batteries (AAx2) with MICRO-USB port. Battery Charge Switch Net Weight: 193g Accessories included: High quality stereo headphones, zippered case, Aiwa Micro-USB nylon braided charging cable with aluminum housing (5V, 1A capacity), 2 rechargeable NiMh 1500mAh batteries.