Sony ICFC218BK AM/FM Clock Radio Product Description ATS (Automatic Time Set) ADST (Automatic Daylight Savings Time Adjustment) Built-in Calendar Back-up with Installed Lithium Battery Day/Night Function: Time: 12-hour system Audio Frequency Range: AM 530-1710kHz, FM 87.5-108MHz Antenna System: AM Built-in Ferrite Bar Antenna, FM Power Code Alarm: Radio or Buzzer Power Requirements: AC 120V, 60Hz Output Power: 150mW at 10% harmonic distortion Battery Life (Approx.): Up to 250 Days with Sony battery Speaker Dimensions: 2 5/8-inch (66mm) Dimensions: Width 6 1/8 x Height 2 9/16 x Depth 5 15/16 inch (155 x 64.5 x 150mm)