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+====== STP1-11 ======
+{{wst>image_cr|STP|1-11|Calibre STP1-11|320px}}
+Calibre **STP1-11** is an automatic watch movement produced by [[STP]]. It is very similar to the [[ETA 2824-2]].
+===== Overview =====
+Like the 2824, Cal. STP1-11 measures 11½ [[ligne]] (25.6 mm) in diameter. However, STP uses a longer, thinner [[mainspring]] allowing them to boost power reserve to 44 hours, six more than ETA. It is also equipped with 26 jewels, one more than the ETA. The extra jewel supports the top of the [[barrel arbor]]. Cal. STP1-11 is tested in 5 positions and are finished with [[côte de Genève]].
+Like the [[Valanvron VAL-24]], the STP1-11 might be based on the [[Chinese]] [[Sea-Gull]] [[ST2130]] [[ebauche]]. Both share the same architecture (nearly identical to the ETA 2824) and the photos on the STP web site include the label, "ST2100" under the movement. If this is the case, STP's finishing must add more than 50% value to the movement so it can legally be called [[Swiss Made]].
+The related **STP3-13** movement adds a blued steel [[swan neck regulator]] to the basic STP1-11. The similar **STP5-15** is an [[open heart]] version, while the **STP6-15** is fully [[skeleton]]ized. **STP2-12** (including STP2-12-1, STP2-12-3, and STP2-12-6) have a [[power reserve indicator]] and added [[calendar]] complications.
+===== See Also =====
+  * [[ETA 2824-2]]
+  * [[SW 200|Sellita SW 200]]
+  * [[Valanvron VAL-24]]
+  * [[Hangzhou 6300]]
+  * [[Sea-Gull ST2130]]
+<WRAP ud ud_mov>
+**Description:**
+  * [[Self-winding]] movement, [[central rotor]], bi-directional winding
+**Functions:**
+  * Hours, minutes
+  * [[Central seconds]] with [[hacking seconds]]
+  * Date with [[quickset date feature]]
+**Data:**
+  * 11½ [[ligne]]s
+  * ∅ 25.6 mm
+  * 26 [[jewels]]
+  * 28,800 A/h
+  * [[Power reserve]] 44 hours
+**Production period:**
+  * Since [[2012]]
+</WRAP>
+{{tag>Movements Automatic_movements STP_calibres ETA_2824}}