Maxell 395 SR57 SR927SW

Maxell SR927SW (also known as the 395) is a high-quality silver oxide button cell battery designed for precision electronic devices requiring stable voltage and long service life. These batteries are manufactured in Japan and are characterized by extremely low self-discharge and high operational safety. 
Technical Specifications
According to official product data from maxell.eu and thebatteryshop.co.uk, the SR927SW features the following parameters:

Voltage: 1.55 V.
Capacity: Approximately 55 mAh.
Dimensions: 9.5 mm diameter and 2.73 mm height.
Chemistry: Silver Oxide (Zinc Silver Oxide), mercury-free (0% Hg).
Type: "Low Drain" (SW) – intended for devices with low but constant power consumption. 


Silver oxide technology ensures a flat discharge curve, allowing the device to operate reliably until the battery is fully depleted.
These batteries are produced without added mercury or lead, complying with EU battery directives.
When stored correctly, these batteries can remain usable for 5 years or more. 

Replaces: renata 395, 610, TR927SW, SR927SW, SR927PW, V395, SR57, TR927W, SR927W, Seiko SB-BP, Seiko SB-AP, Citizen 280-44, Citizen 280-48, Timex W