E. CARE AND HANDLING DURING CHARGING WNotes on use Take care to charge your watch during use. Please note that if you wear long sleeves, the watch can easily become insufficiently charged because it is hidden and not exposed to light. • When you take the watch off, place it in as bright a place as possible, and it will always continue to run properly. WNotes On recharging • Avoid recharging at high temperatures (over about 60°C/140°F), otherwise the watch will be damaged during recharging. (eg) Charging the watch near a light source that easily becomes hot, such as an incandescent lamp or a halogen lamp. Charging in a place that easily becomes hot, such as a dashboard. When you charge the watch with an incandescent lamp, halogen lamp or other light source that generates heat, take a distance about 50cm (20in.) from the light source to prevent extremely high temperature. 12 F. REPLACING THE SECONDARY BATTERY Unlike ordinary batteries, the secondary battery used in this watch doesn't have to be periodically replaced due to repeated charging and discharging. CAUTION Never use another battery different from the secondary battery used in this watch. The watch structure is so designed that a different kind of battery other than that specified cannot be used to operate it. In case a different kind of battery such as a silver battery is used by some chance, there is a danger that it will be overcharged to burst, causing damage to the watch and even to the human body. 13