User Manual

20S EVO

3.4 Earbuds

If you want to wear your own earbuds, connect the earbuds to the

earbud port on the left side of the clamp. You can connect your

earbuds to the clamp while having the speakers connected to the

clamp. The sound of the earbuds will be active while the sound of the

outer speakers becomes inactive.

Note:

If you remove the outer speakers from the clamp, make sure to reassemble

the speaker port cover and tighten the screw.

4 GETTING STARTED

4.1 Charging

WARNING

When charging the battery, use only the approved charger provided

by the manufacturer. Use of a non-approved charger may cause ﬁre,

explosion, leakage, and other hazards which may also reduce the life time

or performance of the battery.

You can charge the 20S EVO by connecting the supplied USB power

& data cable into a computer USB port or USB wall charger. You can

use any standard micro-USB cable to charge the 20S EVO. The LED

turns red while the headset is charging and turns blue when it is fully

charged. It takes about 2.5 hours to be completely charged.

Note:

Any 3rd party USB charger can be used with Sena products if the charger

is approved by either the FCC, CE, IC or other locally approved agencies

that Sena accepts.