HS400

• 3.5 mm stereo connector for Maycom two way FRS radio
• 2.5 mm stereo connector for mobile phone
• Slim (6mm) padded HiFi speakers (diam. 36mm)
• Special type low noise microphone (for noise reduction)
• Waterproof PTT button and mini DIN connector

HS400B

• Same as HS400, but with boom mike headset for open / flip-up helmet.