closing tag is in template navbar
timefactors watches



TZ-UK Fundraiser
Results 1 to 9 of 9

Thread: Selita SW220-1 accuracy

  1. #1
    Craftsman
    Join Date
    Jul 2011
    Location
    EAST MIDLANDS
    Posts
    623

    Selita SW220-1 accuracy

    Selita 220-1. Please can those of you who are movements savvy tell me what timekeeping accuracy i should expect over 24hrs with this movement.I have read +- 12 seconds from some sources but another source said +-30 seconds in 24hrs. I am interested to know which is correct.

  2. #2
    Journeyman
    Join Date
    Aug 2017
    Location
    farmborough
    Posts
    185
    It depends what grade sw220 you have.

    Standard

    Elabore

    Top

    Chronometer

    They all have different accuracy ratings.

    Sent from my SM-S908B using Tapatalk

  3. #3
    Craftsman
    Join Date
    Feb 2017
    Location
    A mile or two outside of London
    Posts
    624
    I believe the SW220 is the SW200 with an additional day function, so the precision should be the same as the base movement. According to Calibre Corner:

    4 GRADES OF SW200:

    Just like the ETA caliber 2824-2, there are four grades of the SW200 movement:

    Standard – adjusted in two positions; accuracy of +/-12 sec/day up to +/- 30 sec/day
    Special (Elabore) – adjusted in three positions; accuracy of +/-7 sec/day up to +/- 20 sec/day
    Premium (Top) – adjusted in five positions; accuracy of +/-4 sec/day up to +/- 15 sec/day
    Chronometer – COSC criteria

    I've had loads of SW200's and mine have fairly typically ran between -10 and +15 secs per day (mostly elabore grade). The best was an Oris Sixty Five which ran consistently at +2 secs per day. Some manufacturers regulate the movement and others certainly don't. Squale must be in the latter as I've found their SW200's all over the place in terms of daily loss or gain but i still love their watches.
    Last edited by SteveDSSD; 5th June 2023 at 19:43.

  4. #4
    Master
    Join Date
    Sep 2004
    Location
    West Sussex, United Kingdom.
    Posts
    8,142
    accuracy of +/-12 sec/day up to +/- 30 sec/day

    I find the above confusing. Surely it should just say +/-30sec/day. Unless they mean it won't be better than +/-12sec/day?

  5. #5
    Craftsman
    Join Date
    Jul 2011
    Location
    EAST MIDLANDS
    Posts
    623
    Quote Originally Posted by redmonaco View Post
    accuracy of +/-12 sec/day up to +/- 30 sec/day

    I find the above confusing. Surely it should just say +/-30sec/day. Unless they mean it won't be better than +/-12sec/day?
    This is exactly the point i dont understand either. I have a new watch with this movement and although which grade is not specified i am guessing it is the standard grade. So far it is running at +20s ..Thank you for the replies.

  6. #6
    Master
    Join Date
    Oct 2002
    Location
    Leicester, UK
    Posts
    8,051
    Quote Originally Posted by silver centurian View Post
    So far it is running at +20s.
    You may be able to influence* this figure by:

    1 The position you put the watch at night - dial up, dial down, crown up et cetera.
    2 Winding it - even though it's automatic - when you take it off at night and/or put it on in the morning.

    *Remember, however:
    a Try only one change at a time.
    b Keep a record, taken at the same time each day.
    c One or other changes may make it worse.

    The best alternative, of course, is to take it to your local watchmaker and ask them to regulate it. Mine does it for £40 (for non-chronographs).

  7. #7
    Craftsman
    Join Date
    Jul 2011
    Location
    EAST MIDLANDS
    Posts
    623
    Quote Originally Posted by Tinker View Post
    You may be able to influence* this figure by:

    1 The position you put the watch at night - dial up, dial down, crown up et cetera.
    2 Winding it - even though it's automatic - when you take it off at night and/or put it on in the morning.

    *Remember, however:
    a Try only one change at a time.
    b Keep a record, taken at the same time each day.
    c One or other changes may make it worse.

    The best alternative, of course, is to take it to your local watchmaker and ask them to regulate it. Mine does it for £40 (for non-chronographs).
    Who is your local watchmaker and what are there contact /business details please

  8. #8
    Master
    Join Date
    Feb 2010
    Location
    Cheshire
    Posts
    1,873
    Just looked over Watch Tracker for my CWC RN300 (SW200-1 Top Grade I believe). Has averaged about +1.5spd. I also have a Smiths Navigator with manual SW220 Top, has averaged around +1spd.

    Very happy with my Sellita performances.

  9. #9
    Master adzman808's Avatar
    Join Date
    Apr 2012
    Location
    Porto & the UK
    Posts
    2,736
    Quote Originally Posted by redmonaco View Post
    accuracy of +/-12 sec/day up to +/- 30 sec/day

    I find the above confusing. Surely it should just say +/-30sec/day. Unless they mean it won't be better than +/-12sec/day?
    AFAIK... it means

    Up to +/-12 sec/day = what we aim to get

    Up to +/- 30 sec/day = close enough that'll do

    Better than +/-12 sec/day = well ain't you the lucky one

    Worse than +/- 30 sec/day = yeah that ain't right

    =============

    FWIW I've had three watches with the SW200-1 in the past year (I know the OP is SW220)

    #1 = about +5-7spd

    #2 = about +1-2spd

    #3 = about +7-10spd

    I find that

    a) what position I leave it in at night makes a difference

    b) what I spend the day doing makes a difference... for example #2 if I'm busy on my feel all day every day it'll be about +4 spWEEK, if I'm lazing around the house it's more like +2 spd

    =============

    To the OP

    Accuracy is best measured over a week, then divided by 7 to get an average...

    A caseback tool and timing machine is a relatively small outlay for years of usage... and the ETA/SW range of movements are very easy to make small regulation adjustments to

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Do Not Sell My Personal Information