Sena R2 User Manual

R2 Smart Road Cycling Helmet | 14
3 GETTING STARTED
3.2 Charging
Charging the Bluetooth System
Depending upon the
charging method, the
Bluetooth system will be
fully charged in about
2.5 hours.
Note:
• The Bluetooth system includes a Fast Charging feature which allows
it to charge quickly over a short period of time. For example, a
user can get up to 5 hours of talk time after charging the Bluetooth
system for 20 minutes.
• Please make sure to take off your helmet while charging. The
Bluetooth system automatically turns off during charging.
• 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.
• The R2 is compatible with 5 V input USB-charged devices only.
3.3 Legend
1x
TAP
Tap button the specified
number of times
10s
HOLD
Press and Hold button for
the specified amount of time
“Hello”
Audible prompt
3.4 Powering On and Off
Powering On
=
1s
HOLD
Powering Off
=
1x
TAP

Sena R2 Specifications

General

Certificates	CE, FCC, IC
Bluetooth Version	Bluetooth 4.1
Intercom Range	900 meters (open area)
Operating Temperature	-10°C to 55°C
Charging Temperature	0°C to 45°C
Profiles	HFP, HSP, A2DP, AVRCP