Sennheiser Presence Presence Manual - Page 12

Putting the headset into operation 1:20 h Putting the headset into operation Charging the headset battery WARNING Danger of injury! Wearing the headset when charging can cause burns and injuries. ̈ Do not wear the headset when charging. A complete charging cycle takes about 1 hour and 20 minutes. Before using the headset for the first time, charge the rechargeable battery for a complete charging cycle without interruption. A charging time of ... approx. 10 min approx. 20 min approx. 40 min approx. 80 min corresponds to a talk time of ... LED flashes less than 1 hour 1x between 1 and 2 hours 1x between 2 and 4 hours 2x between 4 and 10 hours 3x 1 Take off the headset and switch it off (see page 17). 2 Connect the micro USB plug of the charging cable to the USB socket of the headset. 3 Connect the USB plug of the charging cable to the USB socket of your computer, the car charger or a power supply unit (not included). 4 The battery is being charged. The LED flashes depending on the battery charge level. After 5 minutes, the LED goes off. Press the multi-function button to check the battery charge level. When the battery is fully charged, the LED lights up blue constantly. 1 2 3 4 LED flashes Meaning * 1x below 1 hour talk time 1x 1 to 2 hours talk time 2x 4 to 2 hours talk time 3x 10 to 4 hours talk time *not included 100 % When the battery charge level drops below 15 minutes of talk time, the LED flashes red and the voice prompt "recharge headset" is announced several times. When the battery is flat, the headset switches off automatically. Presence | 11