{"id":337,"date":"2026-03-15T17:04:21","date_gmt":"2026-03-15T17:04:21","guid":{"rendered":"https:\/\/oceanwp.org\/underwear\/class-aptent-taciti-sociosqu-copy\/"},"modified":"2026-10-02T11:42:13","modified_gmt":"2026-10-02T03:42:13","slug":"quartz-movement-case-for-tool-watches","status":"publish","type":"post","link":"https:\/\/phgwatch.com\/ko\/quartz-movement-case-for-tool-watches\/","title":{"rendered":"\ucffc\uce20\uc758 \ubc29\uc5b4: \uc65c PHG\ub294 \uba85\uc608\ubcf4\ub2e4 \uc815\ubc00\uc131\uc744 \uc120\ud0dd\ud588\ub294\uac00"},"content":{"rendered":"
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There is a conversation in watch circles that needs to end: the idea that quartz movements are somehow less legitimate than mechanical ones.<\/p>

It isn’t true. It was never true. And for a tool watch \u2014 a watch whose primary job is to be accurate and reliable under adverse conditions \u2014 quartz is often the objectively better choice.<\/p>

The Accuracy Gap Is Not Close<\/h4>

A well-regulated mechanical movement gains or loses 5\u201310 seconds per day. Over a year, that’s up to 60 minutes of accumulated error. A standard quartz movement gains or loses \u00b115 seconds per\u00a0month<\/em>. The difference isn’t subtle \u2014 it’s roughly 100:1 in favour of quartz. For a watch being used to coordinate timing, navigation, or any real operational task, this matters enormously.<\/p>

The original British military specification for field watches included quartz movements in the 1970s precisely because the army needed accuracy, not heritage.<\/p>

MIYOTA 1L45: Two Hands and a Subsidiary Seconds<\/h4>

Two of our four Heritage Series references \u2014 the\u00a0KM-1940<\/strong>\u00a0and the\u00a0WO-1945<\/strong>\u00a0\u2014 use the subsidiary-seconds configuration: hours and minutes on the main dial, with a small running seconds at 6 o’clock. No central sweep second. This is the historically correct layout for both the German Kriegsmarine deck watch and the British WWW Dirty Dozen. For this configuration, we use the\u00a0MIYOTA 1L45<\/strong>, a Japanese-made two-hand quartz calibre with subsidiary seconds. The dial centre remains clean. The seconds can be read without dominating the display.<\/p>

Seiko VH31: The Centre-Sweep Option<\/h4>

The other two references \u2014 the\u00a0RAF-1948<\/strong>\u00a0(Mark XI) and the\u00a0W10-1967<\/strong>\u00a0(Smith W10) \u2014 are three-hand watches with a centre sweep second. The Mark XI never had a subsidiary seconds dial; its sweep second was the primary timing reference for the pilot. The Smith W10 likewise used a full three-hand layout.<\/p>

For these watches, we use the\u00a0\uc138\uc774\ucf54 VH31<\/strong>. What distinguishes the VH31 is its stepping motor, which produces a smooth, continuous sweep rather than the one-beat-per-second tick of cheaper quartz movements. At a glance, it reads like a mechanical \u2014 which is either a feature or an irrelevance, depending on your perspective. We think it’s a feature.<\/p>

Both movements are accurate. Both are reliable. Both are serviceable anywhere in the world without specialist tools. Both allow PHG to deliver specification-correct watches at prices that don’t require a financial conversation.<\/p>

The romance of mechanical horology is real. But if the watch is going to work, quartz is how it works.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Let’s start with a fact: if a modern defence ministry issued an RFP for a standard-issue military wristwatch today, the technical specification document would not demand a mechanical movement. It would say: “Under all operational conditions, monthly deviation shall not exceed \u00b1X seconds.” History backs this up. The 1970s: Every Military Made the Same Call […]<\/p>\n","protected":false},"author":1,"featured_media":737,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[158],"tags":[49,93,88],"class_list":["post-337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-watchmaking","tag-brand-story","tag-tool-watch","tag-wo-1945-quartz","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails","has-product-nav"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/phgwatch.com\/wp-content\/uploads\/2026\/06\/DSC06401.jpg","_links":{"self":[{"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/posts\/337","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/comments?post=337"}],"version-history":[{"count":7,"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/posts\/337\/revisions"}],"predecessor-version":[{"id":1261,"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/posts\/337\/revisions\/1261"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/media\/737"}],"wp:attachment":[{"href":"https:\/\/phgwatch.com\/ko\/wp-json\/wp\/v2\/media?parent=337"}],"wp:term":[{"taxonomy":"category","em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