• Motorcycle Helmet Bluetooth Installed Headset Is DOT FMVSS-218 Certified. The Bluetooth Motorcycle Helmet Aerodynamic Shell Design Constructed Using Advanced Lightweight Composite Poly-Alloy Shell, Features Interchangeable Shields, Removable & Washable Liner and Cheek Pads. It Maximizes Safety and Comfort, While Riding on The Road, Street, Or Highway.
• Bluetooth 4.1 Technology Offers Riders Single Button Control for Hands-Free Calling, Answering, Rejecting Incoming Phone Calls, Listening to Music (Play/Pause, Previous/ Next Track), FM Radio and GPS Navigation Audio. With Built-In Stereo Speakers and Wind Resistant Noise-Canceling Microphone, It Allows Bikers to Conduct Calls or Listening to Music or Voice Command Clearly.
• GDM GHOST Mark II Full Face Bluetooth Helmet with Fully Charged Battery Provides 12 Hours of Talk Time And 110 Hours of Standby. If Bluetooth Is Unused for A Period of Time, The Battery Will Enter Deep Sleep Mode. Recharging the Battery Around 30 Minutes Will Wake the Battery Up. After This procedure, Bluetooth Functionality Will Be Restored Back to Normal.
• Package Contains 1 GDM GHOST MARK II Full Face Matte Black Motorcycle Helmet with Bluetooth, 2 Shields: USB Cable, Charger, GDM Helmet Bag, And User Manual.
• Please Refer to The Following Size Guide to Determine Your Correct Size. To Choose Your Correct Helmet Size, Please Measure the Circumference of Your Head 1" Above Your Eyebrows Around Your Head and Refer to The GDM Helmets Size Guide. Please Note That the Size Guide Is for Reference Only and Cannot Guarantee Perfect Fit. S: 21 5/8 – 22 IN | M: 22 ½ -- 22 7/8 IN | L: 23 1/4 -- 23 5/8 IN | XL: 24 -- 24 3/8 IN | 2XL: 24 3/4 -- 25 ¼ IN
• Designed In The USA, Made in China

GDM Ghost Mark II full face motorcycle helmet with Bluetooth is DOT FMVSS-218 certified. Its shell is constructed using an advanced lightweight composite poly-alloy. It features five points of ventilation with removable and washable liner and cheek pads. It also includes a double D-ring chin strap and comes with two visors in the box. Please refer to the following size guide to determine your correct size. To choose your correct helmet size, please measure the circumference of your head 1" above your eyebrows around your head and refer to the GDM Duke Helmets size guide below. Please note that the size guide is for reference only and cannot guarantee a perfect fit. SMALL: 21 5/8 – 22 IN 55-56 CM | MEDIUM: 22 ½ -- 22 7/8 IN 57-58 CM | LARGE: 23 1/4 -- 23 5/8 IN 59-60 CM | X-LARGE: 24 -- 24 3/8 IN 61-62 CM | 2X-LARGE: 24 3/4 -- 25 ¼ IN 63-64 CM BUTTON FUNCTIONS POWER Button: -Long press 2 seconds to turn the Bluetooth receiver on. If no available phones are found, the device will go into “waiting mode” for paring and the blue and red LED lights will flash quickly. If an already paired device is found, the devices will automatically connect. To turn the device off, long press 3 seconds and the Bluetooth module will power off. -Long press 1 seconds to start SIRI/Google assistant. -To change the language, double press while device is connected, and beeping sound is heard. MENU Button: -While playing music, short press to play and pause -Device will automatically answer an incoming call in 10 seconds. -long press 1 second to reject an incoming call -Short press to hang up after a call -Short press to answer an incoming call -Long press 3 second to start or stop EM radio -Double press to redial the last outgoing call (+) Button: -Short press for volume increase -Long press for the next track (-) Button: -Short press for volume decrease -Long press for the previous song

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.

GDM™ HELMETS (Duke Series) SIZE CHART
SIZES	INCHES	HAT SIZE	CM
Small	21 5/8 -- 22	6 7/8 -- 7	55-56
Medium	22 1/2 -- 22 7/8	7 1/8 -- 7 1/4	57-58
Large	23 1/4 -- 23 5/8	7 3/8 -- 7 1/2	59-60
X-Large	24 -- 24 3/8	7 5/8 -- 7 3/4	61-62
2X-Large	24 3/4 -- 25 1/4	7 7/8 -- 8	63-64