The rf-2400 portable AM/FM radio Features a large, easy-to-read radio dial with a separate scale for AM and FM tuning and a built-in LED indicator for low-light tuning. It's equipped with a ferrite rod AM antenna, a telescoping FM antenna, and 4" Dynamic speaker for delivering crisp, high-quality sound. A 3.5mm port accepts Mono earphones. The rf-2400 can be powered using the included AC cable or 4 AA batteries, so you can use it at home or on the go.rf-2400 AM/FM tuner - lets you choose from the wide range of radio talk shows and music programmingpocket size for portable use - with ultra-compact design slips easily into shirt or jacket pocket or handbag for convenience and portabilitybuilt-in speaker - for good sound quality and convenient listening anywhereearphone jack - for private listening enjoyment and improved sound clarity in noisy environmentstelescopic antenna - for FM and built-in ferrite bar antenna for amspeaker size: 4" (10 cm)antenna Type: ferrite-rod AM, telescoping frequency range FM: 87.5-108 MHz, AM: 530-1710 khzport: 3.5mm headphone outputpower requirements: 120 VAC (AC cable included) or 4 x AA batteries (not included)