Description
ITTA SR721SW 362 1.55V Silver Oxide Watch Battery – Pack of 5
The ITTA SR721SW 362 1.55V Silver Oxide Watch Battery is a compact, non-rechargeable button cell for compatible quartz watches and precision electronic devices.
Each pack contains five individually packed silver-oxide batteries. Additionally, the SR721SW format provides a replacement option for watch movements requiring a 362 battery.
Silver-oxide chemistry generally maintains a relatively stable operating voltage during discharge. Therefore, it is commonly used in compatible precision timekeeping applications.
Key Features
- 1.55V Nominal Voltage: Supports compatible quartz watch movements.
- Silver Oxide Chemistry: Offers relatively stable voltage delivery.
- SR721SW / 362 Format: Matches devices specifying this battery designation.
- Compact Button-Cell Size: Approximately 7.9mm diameter and 2.1mm height.
- Non-Rechargeable: Uses primary silver-oxide chemistry.
- Pack of 5: Includes five watch batteries in one blister strip.
- Individual Compartments: Helps keep the batteries separated until use.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ITTA |
| Model | SR721SW / 362 |
| Nominal Voltage | 1.55V |
| Chemistry | Silver Oxide |
| Battery Type | Primary Button Cell |
| Diameter | Approx. 7.9mm |
| Height | Approx. 2.1mm |
| Rechargeable | No |
| Pack Quantity | 5 Batteries |
| Packaging | Blister Strip |
Dimensions refer to the standard SR721SW battery format. Always confirm the original battery model required by your equipment.
Common Applications
The ITTA SR721SW / 362 battery may suit compatible:
- Quartz wristwatches
- Analog watch movements
- Small precision electronic devices
- Other equipment requiring SR721SW or 362 batteries
However, not all watch movements use the same battery size. Always check the original battery code before purchasing a replacement.
SR721SW vs 362 Battery
SR721SW and 362 commonly identify the same silver-oxide battery format.
Both designations typically refer to a 1.55V button cell measuring approximately 7.9mm in diameter and 2.1mm in height.
Consequently, watch owners may find either designation in replacement guides and battery charts.
Nevertheless, check the manufacturer’s specification to confirm compatibility.
SR721SW vs SR621SW: What’s the Difference?
Although both batteries use silver-oxide chemistry and provide a nominal voltage of 1.55V, their dimensions differ.
SR721SW / 362
- Diameter: Approximately 7.9mm
- Height: Approximately 2.1mm
SR621SW / 364
- Diameter: Approximately 6.8mm
- Height: Approximately 2.15mm
Therefore, these models are not direct physical replacements.
Choosing the correct battery size helps ensure proper contact and fit inside the watch movement.
SR721SW vs SR626SW
The SR721SW and SR626SW batteries also differ in size.
SR721SW / 362: Approximately 7.9 × 2.1mm.
SR626SW / 377: Approximately 6.8 × 2.6mm.
As a result, customers should not substitute one for the other based solely on voltage or chemistry.
Silver Oxide vs Alkaline Watch Batteries
Silver-oxide batteries generally maintain a more stable voltage profile during discharge than similar alkaline button cells.
Moreover, these characteristics suit many precision watch movements.
However, cells with similar dimensions may use different chemistries.
For reliable operation, select the exact battery type recommended by your watch manufacturer.
How to Replace an SR721SW Watch Battery
- Verify that your watch requires an SR721SW or 362 battery.
- Open the watch case carefully using suitable tools.
- Check the original cell’s polarity and orientation.
- Remove the exhausted battery without damaging the watch movement.
- Install the replacement with the correct polarity.
- Close the watch case and check normal operation.
For delicate or water-resistant watches, professional replacement may help protect the movement and case seals.
Important Battery Safety Instructions
- Never recharge silver-oxide button batteries.
- Do not short-circuit the battery terminals.
- Avoid crushing, puncturing, dismantling or exposing cells to fire.
- Keep batteries away from children.
- Store unused cells securely in their original packaging.
- Remove exhausted batteries promptly.
- Follow applicable local battery disposal requirements.
Warning: Swallowed button batteries can cause severe internal injuries. If swallowing is suspected, seek emergency medical assistance immediately.
Frequently Asked Questions
What is the voltage of the ITTA SR721SW battery?
Each battery has a nominal voltage of 1.55V.
Is SR721SW the same as 362?
These designations commonly refer to the same silver-oxide battery format. However, verify your device’s original requirement.
How many batteries does the pack contain?
Each blister strip contains five ITTA SR721SW / 362 batteries.
Can I recharge these batteries?
No. These are non-rechargeable primary silver-oxide cells.
Is SR721SW interchangeable with SR621SW?
No. Their diameters differ, so they should not be treated as direct replacements.
Can I use SR721SW instead of SR626SW?
No, unless your device manufacturer explicitly approves the alternative.
Are these lithium batteries?
No. ITTA SR721SW batteries use silver-oxide chemistry.
Buy ITTA SR721SW 362 Watch Batteries Online at ArcEin
Purchase the ITTA SR721SW 362 1.55V Silver Oxide Watch Battery – Pack of 5 from ArcEin for just ₹65.
Each pack includes five button-cell batteries for compatible quartz watches and small electronic devices.
ArcEin provides secure online payment options and delivery to serviceable locations across India.
For bulk purchases or battery identification assistance, contact contactus@arcein.in.
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