【Compatible Model】: This ctl920f watch battery for Watch Cell Casio for Panasonic CTL920.
【High Quality Assurance】:Our ctl 920f Replacement Battery has UL,CE and Rohs certification, uses Grade A+ rated battery cells. Every battery is manufactured and tested under strict quality control standards.
【Items include】: 1 X CTL920F Battery.
【How to use】: After installing the photopowered battery, you need to use a light source to illuminate the front of the watch glass. When the battery is fully charged, it usually takes 3-5 hours. The light source is preferably sunlight or a lamp/flashlight.