Citizen Cal 8515 is a solar-powered watch with a variety of features, including:

• Time and calendar display
• Insufficient recharging warning
• Quick start
• Time setting indication
• Overcharging prevention

This watch is designed to be used in a variety of environments, including:

• Inside an ordinary office
• Under a fluorescent light
• Outdoors on a cloudy day
• Outdoors on a sunny day

The recharging time for the watch will vary depending on the environment in which it is used. For example, it will take about 2 hours to recharge the watch in an ordinary office, but only 2 minutes to recharge it outdoors on a sunny day.