Tecsun R9710 Portable Pocket-size 10-Band Analog Dual Conversion Worldband AM/FM Shortwave Radio Ultra-compact and lightweight pocket radio receiver with comprehensive AM, FM and 8-band shortwave coverage for entertainment, sports, talk-shows, and breaking news around the world. (Includes an English manual for description). Dual conversion technology for optimal selectivity and image rejection, and 20 inches telescopic antenna for high sensitivity reception assisted by LED signal strength indicator for pin-point tuning accuracy Build-in premium speaker with BTL (Bridge-Tied Load) amplifier delivers loud, dynamic and crispy sound for enhanced enjoyment plus an earphone jack for private listening (stereo earphones included) Weighs less than 6 oz and measures only 4 inches 25mm by 2 inches 75mm, about the same size as a deck of playing cards, ideal for travel and outdoors Powered by optional 3V ACorDC power adapter (NOT included) or 2 common-type AA batteries (NOT included)