Sena 5S Bluetooth Headset Dual Pack The 5S Bluetooth Headset creates a new standard for entry level helmet communications. Featuring Bluetooth v5.0 and a built-in LCD display, increased audio and intercom performance is matched by an even easier to use rider interface. High definition sound quality, music sharing and built-in graphic equalizer profiles tailor audio performance to every preference and playlist. The Sena 5S also lets you answer phone calls hands-free, listen to FM radio, accept GPS turn-by-turn directions, and communicate in duplex with your passenger or other riders. Speakers are now designed with a beveled taper for improved fit in helmet speaker pockets. These 40mm diameter drivers separate themselves from previous generations with a marked increase in maximum volume, bass, and clarity. Pre-ride setup is a breeze with the 5S Headset's backlit LCD interface. Night or day, you can sync units easily and comfortably - with helmets off - by using the convenient display interpreting sequences of beeps and flashing indicator lights is no longer required. While on the move, glove-friendly physical buttons and the oversized jog dial make for easy adjustment. Better yet, the 5S accepts multilingual voice commands in eight different languages. The firmware is a free download from Sena Technologies.