D2 Features:
Bluetooth3.0 HSP， HFP， A2DP， AVRC profiles supported
Calls handling
500M full duplex intercom4 buttons operation
Aux audio input
Firmware USB upgrade available
Calls， music volume up/down independent and adjustable
Full weather protected， better waterproof performance
It can pair "rider to rider" or "rider to pillion". Can pair 11 Intercoms at a time， and easily switch to any 2 of them
Works with any? Bluetooth equipped mobile phone，GPS or MP3 Stereo music CD player/iPod and etc. by connecting the headphone wires directly (without main unit)
Plastic + Rubber button， more stable structure， better waterproof performance.
Wireless hands free communication for motorcyclist ?
Safe driving while talking with friends?? ?
Can be used as a Bluetooth headset and a wireless music headset while you're not riding


D2 Technical Specifications:
1). Bluetooth Version: Bluetooth 3.0
2). Chip: CSR BlueCore5MM
3). Model: DK_218M
4). Intercom transmission distance:? 500M
5). Mobile Phone Connection transmitting range:10M
5). RF Frequency: 2.4GHZ
6). Bluetooth RF Spec: Class 1
7). RF Power:16dB
8). Standby Time:100 Hours
9). Cell Phone Talk Time: 8Hours
10). Intercom Talk Time:8Hours
11). Music Play Time: 8Hours
12). Charge Time:3Hours
13). Battery: DC5.0V/500mA
14). Battery Type:Li-polymer Battery 500mAh
15). Working Voltage:3.3--4.2V
16). Color: Black
17). Applicable model: Compatible with all major brands of Bluetooth mobile phone and Bluetooth GPS

?
D2 Functions:

1. Intercom:

??? Support 500 meters maximum range full duplex intercom between two Bluetooth headsets
??? With DPS wind noise suppression to ensure the crystal clear voice quality when speeding along the highway
??? Independent intercom volume control !#!amp!*! memory
??? Voice volume adjusting automatically according to the motorcycle speed !#!amp!*! ambient noise

2. Telecom Phone Calls Handling:

???? Bluetooth Headset， Hands Free (Support HSP，HFP)
??? *When connected with mobile phones with Bluetooth function can realize hands free call-answering
??? *Bluetooth Hands-free. Automatically switch seamlessly among Bluetooth mobile phone， Intercom
????? and stereo sources.
??? *Voice dialing
??? *Last number redial
??? *Voice control to answer incoming calls
??? *Manual answer incoming calls
??? *Rejecting incoming calls
??? *Hand up calls
??? *Independent hands free volume control and memory
??? *Mobile phone highest priority

3. Stereo Music

????? Bluetooth Headset， Hands Free (Support A2DP，AVRCP)
???? *When connected with mobile phones or Bluetooth stereo sources can realize to enjoy music.
???? *Control play and pause of phone music playing
???? *Support music play， pause， playback and forward control with AVRCP
???? *Independent stereo volume control and memory

4. GPS:
???? Supports GPS navigator connection
???? Receive navigator voice audio from the headset/control music playing of the navigator
???? Independent Volume control.

5. FM:
???? Frequency cover: 76-108MHz
???? Automatically channel searching
???? Save and memorize 8FM stations
???? Independent FM volume control and memory
???? Insert Aux-in cable and automatically identify to switch Aux-in input
???? Independent Aux-in volume control and memory

Product !#!amp!*! Accessories:
1). Host?? ?
2). USB Chargers?????? ?
3). USB Charging cable
4). D2 Retaining clip?????? ?
5). Hexagonal screwdriver??? ?
6). Headset Speakers