Intercom Bluetooth Headset : GDM Hyper Sonic. Intercom With another Hyper Sonic unit. Rechargeable with micro USB port (included).Premium HiFi stereo speakers for clear sound quality. Adopted Bluetooth 5.0 and Qualcomm aptX HD technology provide you super clear voice for talking. Supports 12hrs continuous talking and 120hrs standby time in 1.5 hours single charge.
Hand free calling & listen to GPS directions or Music. To choose your correct size, please measure the circumference of your head 1 above your eyebrows around your head and refer to the following size guide.
Please note that the size chart is for reference only and cannot guarantee a perfect fit. Please use this chart as a guide only. GDMT HELMETS (Duke Series) SIZE CHART. Small 21 5/8" -- 22". Medium 22 1/2" -- 22 7/8".
Large 23 1/4" -- 23 5/8". X-Large 24" -- 24 3/8".2X-Large 24 3/4" -- 25 1/4". This item is in the category "eBay Motors\Parts & Accessories\Apparel, Protective Gear & Merchandise\Helmets & Accessories\Motorcycle & Powersport Helmets". The seller is "motorcyclehelmetoutlet" and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, Korea, South, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Croatia, Republic of, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Panama, Trinidad and Tobago, Guatemala, El Salvador, Honduras, Jamaica, Antigua and Barbuda, Aruba, Belize, Dominica, Grenada, Saint Kitts-Nevis, Saint Lucia, Montserrat, Turks and Caicos Islands, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam, Uruguay.