Sena Smh10 Bluetooth Headset Dual Pack Listen to tunes, follow the GPS or keep in touch with your group, no matter how you use it, the Smh-10 is ready for any adventure. Thanks to Bluetooth v3.0+EDR and advanced digital processing technology, the Sena Smh10 Bluetooth helmet communication system offers excellent sound quality without breaking the bank. The easy-to-access and intuitive button operations make the Smh10 a perfect companion for motorcycles. System Features Universal Intercom: Allows pairing to another brands of Bluetooth headsets Ultra HD Voice Recording compatible with the Sena Gp10 Bluetooth Back for GoPro and Sena Prism Bluetooth Action Camera Audio Booster Individual Volume Control Versatile Jog Dial Use while charging Upgradable firmware General Talk time: 12 hours Standby time: 10 days Working Distance (Intercom): up to 900 meters (980 yards) in open terrain 4-way conference intercom Dimensions Headset: 84.1 mm x 56.5 mm x 38.6 mm (3.3 in x 2.2 in x 1.5 in) Clamp unit: 223.8 mm x 85.5 mm x 30.6mm (8.8 in x 3.4 in x 1.2 in) Headset weight: 60g (2.11 oz) Clamp unit: 84g (2.96 oz) Speakers: 45 mm x 7 mm (1.8 in x 0.28 in) Bluetooth Profiles: Headset Profile, Hand-Free Profile (Hfp), Advanced Audio Distribution Profile (A2Dp), Audio Video Remote Control Profile (Avrcp) Bluetooth v3.0+EDR Audio Advanced Noise Control: Improved wind and engine noise reduction Sidetone: Now you can hear yourself talk similar to a Goldwing or Harley Davidson intercom Built-in SBC Codec Voice prompts Conference phone call with intercom participant Noise cancellation Wind noise reduction Wide volume control Sample rate: 48kHz (Dac) Auxiliary audio-in connection via 3.5mm jack Battery Charging time: 2.5 hours Type: Lithium polymer battery In the Box 2 Headset Main Units 2 Speaker-Microphone Clamp Units 2 USB Power and Data Cables (Micro Usb) 2 3.5mm Stereo Audio Cables 2 Glued Surface Mounting Adaptors 2 Microphone Sponges 2 sets of Velcro brand closures Pads for Speakers 2 Allen Wrenches Please Note: Some of the above features require updating to the latest firmware version. The firmware is a free download from Sena Technologies.