Sena Motorcycle Bluetooth Communication System with HD Audio and Advanced Noise Control
Amazon.com Price: $239.00 (as of 07:11 EST- More info) Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
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- Helmet Fitment
Sena Technologies 20S Bluetooth Communication System Multiset The Sena 20S is a state-of-the-art motorcycle Bluetooth communication system. The unit provides a sleek and aerodynamic design that offers a versatile jog dial that maximizes the ease of use for riders. The 20S features several industry firsts for the motorcycle Bluetooth communication headset market. One industry first is the introduction of Bluetooth 4.0 technology with dual Bluetooth communication modules, to create one of the most advanced Bluetooth headsets in the market. The new Bluetooth technology increases the performance and reliability of the headset while also allowing for increased high definition audio quality. The advanced Audio Multitasking allows for a seamless blend of incoming and outgoing audio to create a mixed audio experience versus the traditional interruption based audio technology of other Bluetooth devices. With the 20S, users can call handsfree with their Bluetooth mobile phones, listen to stereo music or voice instructions of GPS navigation by Bluetooth wirelessly, and have intercom conversations in full duplex with a passenger or other riders. Bluetooth 4.0 and Senas Unique Architecture The 20S features a unique architecture that utilizes the industrys first dual-module Bluetooth communication system as well as the industrys first Bluetooth 4.0 technology. The dual Bluetooth module allows for increased flexibility of functions, performance, and reliability. With the dual Bluetooth system, the features of the 20S can operate at higher capacity and a faster rate of performance. Users can take advantage of simultaneous communication by running multiple applications music, GPS, mobile phone, intercom and seamlessly switching back and forth as needed. With the combination of the dual module Bluetooth system and Bluetooth 4.0, the 20S is the most advanced Bluetooth communication device in the market. Audio Multitasking One key feature new for the 20S is the audio multitaski
Industry first dual Bluetooth module communication system
Audio Multitasking advanced audio management of intercom, phone, music and FM radio patent pending
Advanced Noise Control
Versatile bike-to-bike conference intercom
Helmet fitment is essential to the operation of a helmet during an impact. For the helmet to perform correctly during an impact, it must remain on the head.
Measuring the head is just a starting point for the entire sizing procedure.
A small metal tape measure or a cloth tape may be used to make your first measurement. You may also use a cord, which can subsequently be set against a measuring tape.
Take several measurements. The greatest measurement is the one you need to use.
Size Comparison Chart
|Standard Size||Hat Size||Inches||Centimeters|
|4XS||6 3/8||20 1/16||51|
|3XS||6 1/2 - 6 5/8||20 1/2 - 20 7/8||52-53|
|2XS||6 3/4 - 6 7/8||21 1/4 - 21 5/8||54-55|
|S||7 1/8||2 3/8||57|
|M||7 1/4 - 7 3/8||22 3/4 - 23 1/4||58-59|
|L||7 1/2||23 5/8||60|
|XL||7 5/8 - 7 3/4||24 - 24 3/8||61-62|
|2XL||7 7/8 - 8||24 3/4 - 25 1/4||63-64|
|3XL||8 1/8 - 8 1/4||25 5/8 - 26||65-66|
|4XL||8 3/8 - 8 1/2||26 3/8 - 26 3/4||67-68|