| 摘要 |
PURPOSE:To attain the safety of diving activity by easily making sure of diving depth and diving time by incorporating a depth-sounding gauge and watch in the same case. CONSTITUTION:Digital display part 2 normally displays the time and when button 4 is depressed, a calendar mode is set by switching to display the date. With button 4 further depressed, display in timer mode comes into effect and with button 4 depressed once more, the normal time display mode is set. Digital display part 3, buttons 6-8, and water pressure detector 9 constitute a depth-sounding gauge; detector 9 detects water pressure, an electronic circuit performs digital conversion and depressing water-depth display button 7 displays the depth of water on display part 3. |
