| 摘要 |
PURPOSE:Providing of a tapered face having sound radiation holes in the 3 o'clock and 9 o'clock directions on the rear cover side is made easy, sound is radiated efficiently and the entire watch is made smart by flatly disposing an electroacoustic transducer and a battery in the 6 o'clock and 12 o'clock directions, symmetrically to the center of the watch unit. |
