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. 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. 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 another rider. 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. The firmware is a free download from Sena Technologies.