Sena Impulse Modular Smart Helmet with Sound by Harman Kardon.
Features
- 1.2 mile Mesh Intercom range (can extend 5 mi with minimum 6 riders)
- Multi-Channel Open Mesh Intercom supports virtually limitless riders
- Modular Helmet Design
- Group Mesh Intercom supports up to 24 riders in a private group
- Integrated Mesh & Bluetooth Intercom systems
- Premium Speakers & Microphone
- Pinlock®-ready and includes Pinlock anti-fog lens
- Voice-Activated Digital Assistant Access
- Retractable Sun Visor
- Voice Commands in 8 languages
- 18 hour talk time (varies upon intercom and taillight usage)
- 4-way Bluetooth Intercom (1.2 mile range)
- Magnetic Pogo Charging Port
Sizing
HOW TO MEASURE
- Wrap a soft, flexible measuring tape horizontally around your head 1 inch above your eyebrows and ears. Pull the tape softly snug, read the length and repeat for accuracy. Use the largest measurement.
- Select the helmet size that is closest to your head measurement from the Size Chart above. If your head measurement falls between two helmet sizes, it is suggested to go with the smaller size.
| Size Chart | |||
| Size | Head ( CM ) | Head ( In ) | Hat Size ( In ) |
| XS | 53-54 cm | 20 7/8-21 1/4 | 6 5/8-6 3/4 |
| S | 55-56 cm | 21 5/8-22 | 6 7/8-7 |
| M | 57-58 cm | 22 1/2-22 | 6 7/8-7 |
| L | 59-60 cm | 23 1/4-23 5/8 | 7 3/8-7 1/2 |
| XL | 61-62 cm | 24-24 3/8 | 7 5/8-7 3/4 |
| 2XL | 63-64 cm | 24 3/4-25 1/8 | 7 7/8-8 |
