Renata 370 (SR920W) — High-Drain Silver-Oxide Power for Complicated Watches

The Renata 370 (SR920W) is a high-drain silver-oxide button cell crafted for analog watches with additional functions, such as chronographs or backlights. At approximately 9.5 mm in diameter and 2.0 mm in height, it offers the perfect size and output profile for watches requiring dependable bursts of power alongside continuous operation.

Core Specifications

• Chemistry: Silver-oxide, mercury-free
• Nominal Voltage: 1.55 V
• Dimensions: ~9.5 mm × 2.0 mm
• Drain Profile: High-drain (W)
• Compliance: RoHS, mercury-free

Advantages

1. Stable voltage for accurate timekeeping under load
2. Leak-resistant construction to protect watch movements
3. Swiss manufacturing for dimensional precision
4. Mercury-free and environmentally friendly
5. Low self-discharge for long shelf life

Applications

• Chronograph-equipped analog watches
• Watches with lighting or alarms
• Small devices requiring high-drain capability

Handling and Installation

• Confirm SR920W specification before use
• Handle with plastic tweezers
• Check and replace gaskets if needed
• Install with correct polarity

Conclusion

The Renata 370 (SR920W) delivers the perfect blend of size, high-drain performance, and Swiss reliability for advanced analog watches and compatible devices.