Bulova space view. #1-531548 M7 What battery does it need?

They use many, so the answer is always "the same as the one that came out of it".

https://www.energizer.com/specialty-battery-finder/bulova-watch-battery-replacement

Nothing here, which is odd because that normally works,

https://www.google.com/search?q=Bulova+98H48+battery+type

Look for tiny engraving next to the battery compartment.

Or ask them direct.

https://www.bulova.com/ca/en/contact-us.html

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Question edited for clarity, spelling of Bulova.

It is a quality watch. Contact Bulova direct, and get it serviced as well, replace gaskets etc.

https://www.google.com/search?q=bulova+watch+back+replacement+parts

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https://www.quora.com/How-do-I-know-which-battery-I-need-to-fix-my-bulova-watch

I have changed batteries on watches before but none were bulova. I opened the back which you have to do to change battery find what battery you need and order online. I have been able to find at stores year ago but most watches now days people don't change batteries they buy new watches. It is a little harder to find batteries in stores.
When you find the type battery google to get the place to buy it.
https://www.energizer.com/specialty-battery-finder/bulova-watch-battery-replacement

Most likely...
Bulova 228 = S05 American Watch institute, USA: 357 (303)
Japan: SR44W .. (SR44SW)

Possibly...
Bulova 606‎ = S32 AWI... Energizer/Duracell 377 or SR626SW


from:

Which battery number may use in this watch bulova 96t63 thanks


and

Specialty Battery Finder

cant see that model watch on the Bulova web site user manuals
http://www.manualslib.com/brand/bulova/watch.html
if unsure if it needs a battery go to a jeweler or watch or battery seller

some model Bulova Watched instructions
IF YOUR NEW WATCH IS A MECHANICAL WATCH
(no battery)
Mechanical watches differ from Quartz watches in several
respects:
1. No battery changes are needed - they are powered by a main-
spring, which is wound either by wrist movement; or in some
models by daily winding of the setting crown.
2. Because it is a mechanical device, it's accuracy is subject to
the effects of gravity and temperature. You can expect, on the
average, a daily variance of up to 10 to 20 seconds for
mechanical watches.
3. Just like automobiles, these watches require routine mainte-
nance. Due to their mechanical complexity, mechanical
watches require cleaning and new lubrication every 3 to 5
years to run at optimum efficiency.
FOR THE AUTOMATIC SELF-WINDING
MECHANICAL WATCH
it must be wound at least six or seven times before you wear it.
After that, your daily activity should wind the watch sufficiently
to keep it running at night when it is not being worn. If your
normal daily activity is not sufficient, occasional supplementary
manual winding may be necessary. It is suggested that your
mechanical watch be cleaned and oiled periodically to insure
optimum performance. As a mechanical watch, quartz watch
accuracy cannot be expected. References to the power cell do
not apply to Automatic watches

It's an old accutron 214- manufactured 1967. Of course it depends on condition,but the 214 Accutron is very popular and even not working should bring around $50.00 if it is complete, no missing parts. It could possibly bring $75 or more.

Not sure about the case code....but Bulova used a numeric code to 'date' their watches: "L" meant the 1950's; "M" was the 60's; "N" was the 70's....so your M7 means your watch was made in 1967....an N3, would be 1973. Get it?.

M8 in the serial number of your watch signifies that it was manufactured in 1968. Here is a list of codes that are used to identify the year the watch was manufactured just in case you were curious.
A8 = 1948
A9 = 1949
L1=1951
L2=1952
L3=1953
L4=1954
L5=1955
L6=1956
L7=1957
L8=1958
L9=1959
M0=1960
M1=1961
M2=1962
M3=1963
M4=1964
M5=1965
M6=1966
M7=1967
M8=1968
M9=1969
N0=1970
N1=1971
N2=1972
N3=1973
N4=1974
N5=1975
N6=1976
N7=1977
N8=1978
N9=1979
P0=1980
P1=1981
P2=1982
P3=1983
P4=1984
P5=1985
P6=1986
P7=1987
P8=1988
P9=1989
T0=1990
T1=1991
T2=1992
T3=1993
T4=1994
T5=1995
T6=1996
T7=1997
T8=1998
T9=1999

If you go to http://www.bulova.com/service/servicecenter.aspx, you will be able to locate the nearest service center, who will be able to advise you. (incidentally, after such a long time idle, it may need servicing).

Batterie model is Panasonic MT920. You can order a Citizen part no: 295-5600 who is a rechargable batterie for watch mouvement Miyota model BR10. That mouvement is use in Bulova motion quartz, Invicta automatic and Citizen eco drive.