Alpha-212 - Wristwatch Nite - Free user manual and instructions

Product Type	Watch
Brand	Nite
Model	Alpha-212
Movement	Quartz (battery-powered)
Display	Analog with tritium illumination
Case Material	Stainless steel
Crystal	Sapphire or mineral glass
Bezel	Unidirectional rotating bezel (dive timer)
Water Resistance	200 meters (20 ATM)
Diameter	42 mm
Thickness	13 mm
Lug Width	22 mm
Weight	Approximately 150 g (with bracelet)
Power Source	1 x SR626SW battery
Battery Life	Approximately 2 years
Functions	Hour, minute, seconds, date, unidirectional bezel
Illumination	Tritium microgas tubes on hands and dial markers
Bracelet	Stainless steel bracelet with folding clasp
Manufacturer Warranty	2 years
Country of Origin	Switzerland (assembled)
Care Instructions	Rinse with fresh water after saltwater use; avoid harsh chemicals
Safety	Not suitable for nitrox diving without professional check; remove before MRI or high magnetic fields
Spare Parts & Reparability	Battery replacement by qualified watchmaker; authentic parts available via Nite service centers
General Information	Designed for professional and recreational diving; meets ISO 6425 dive watch standards

Frequently Asked Questions - Alpha-212 Nite

How often should I replace the battery in my Nite Alpha-212?

The battery typically lasts about 2 years. Replace it at a qualified watchmaker to maintain water resistance.

Is the Nite Alpha-212 suitable for scuba diving?

Yes, it is water resistant to 200 meters (20 ATM) and meets ISO 6425 standards for dive watches. Suitable for recreational and professional diving.

How do I set the time and date on my watch?

Pull the crown out to position 2 (first click) to set the date, and position 3 (second click) to set the time. Push back in after adjustments. Refer to the manual for exact steps.

Can I replace the bracelet with a NATO strap?

Yes, the 22 mm lug width allows you to swap the bracelet with any standard 22 mm strap, including NATO straps.

How do I clean my Nite Alpha-212 watch?

Rinse with fresh water after exposure to salt or chlorinated water. Use a soft cloth and mild soap for the case and bracelet. Avoid using abrasive cleaners or ultrasonic cleaners.

Does the tritium illumination last forever?

Tritium microgas tubes have a half-life of about 12.3 years. They will glow for many years but gradually dim over time.

What is the warranty period for the Alpha-212?

Nite offers a 2-year international warranty against manufacturing defects. Keep your proof of purchase.

How do I adjust the steel bracelet?

The bracelet has removable links secured by screws or pins. Use a spring bar tool or small screwdriver to remove links. Alternatively, visit a jeweler for adjustments.

Can I use my watch for high-magnetic-field activities?

No, the movement is not antimagnetic. Avoid strong magnetic fields (e.g., MRI machines, large speakers) as they may affect accuracy.

Where can I find spare parts or service for my Nite watch?

Contact an authorized Nite service center. For battery replacement or repairs, only use qualified watchmakers to preserve water resistance.

USER MANUAL Alpha-212 Nite

Alpha Series Handbook

Technical Specifications
GTLS RATING	T100
CASE MATERIAL	316 stainless steel
CASE FINISH	Black PVD or brushed stainless steel
STRAP TYPE	Polymer or stainless steel bracelet
CRYSTAL	Sapphire with triple anti-reflective coating
MOVEMENT TYPE	Quartz
MOVEMENT	Swiss made Ronda 715Li
CROWN TYPE	Screw down
DIAL DIAMETER	31mm
CASE DIAMETER	42mm
CASE DEPTH	14.8mm
LUG WIDTH	22mm
FIXING TYPE	2 x 22mm spring bars(https://www.nitewatches.com/store/gb/screws-pins/pack-of-two-22mm-spring-bars/)
WEIGHT	116g Fitted on polymer strap182g Fitted on steel bracelet
WATER RESISTANCE	300m
BATTERY LIFE	10 Years

Setting the time and date

Pos. I Position of rest (watch running)

Pos. II Quick-change correction for date

Blocking time for the quick-change day correction is from approx. 9.30 pm and midnight.

• Unscrew the crown by turning anti-clockwise (watch still running).
• Pull the crown out to position II (watch still running).
• Turn the crown until the current date appears.
• Push the crown back into position I.
• Gently push and screw the crown clockwise to secure it into the case.

Pos. III Setting the time

• Unscrew the crown by turning anti-clockwise (watch still running).
• Pull the crown out to position III (watch stopped).

- Turn the crown, until the current time is displayed

(remember the 24-hour cycle).

- Push the crown back into position I.

- Gently push and screw the crown clockwise to secure it into the case.

Strap fitting/options

The Alpha models can be fitted with a polymer strap, one-piece 22mm webbing or a stainless-steel bracelet.

With a 22mm lug width and 22mm spring bar fixing, straps are easily interchangeable using a forked spring bar tool. Many 22mm aftermarket straps are also compatible*

The Alpha straps exclusively available through nitewatches.com can be found here:

https://www.nitewatches.com/store/gb/straps/alpha-2016

The stainless-steel bracelet can be adjusted in length by adding or removing links and by also using the 3-micro adjustment on the buckle part of the strap.

*Nite Watches accept no responsibility with the sizing and fitting of any aftermarket straps.

If you have any questions about the Alpha series then please email us on [e-mail].