Office Depot(R) Model 183 (51640A, 51645A/G/D) Black Inkjet Refill Kit Portable, weather-resistant AM/FM radio with high-end 2.5-inch speaker Automatic frequency control locks onto station for clear reception Built-in NiMH battery pack delivers up to 16 hours of play Auxiliary input for iPods, portable MP3 players, and CD players Measures 3.69 x 6.25 x 3.86 inches (W x H x D); 1-year warranty