Plantronics Discovery 975 User Guide - Page 6

Charging Your Earpiece Charging time 1.5 hours....... Full charge using AC or case 30 minutes.... Minimum charge before first use Option A 1 2 2 Your new earpiece performs best when fully charged. While your earpiece is charging, the indicator light slowly flashes red. When your earpiece is fully charged, the indicator light turns off. This applies to all charging options. Never charge the battery where the temperature may fall below 0°C (32°F) or rise above 40°C (104°F). Do not use your earpiece while it is connected to the charger. Option A: Using the AC Charger 1 Plug the AC charger into a power outlet. 2 Connect the AC charger to the charging jack on the earpiece.