Uses: Intercom Mobile phone Bluetooth intercomSize: 170*110*60(mm)Applicable models: motorcycleproduct description:The Bluetooth headset is a portable headset solution based on Bluetooth wireless technology.Bluetooth technology is a short-range radio communication technology used to replace the connecting fiber optic cable between electronic devices. This technology uses a range of frequencies that are available worldwide, ensuring communication compatibility around the world.You can connect your headset to your phone or any device that uses Bluetooth wireless technology that supports a "headset" or "hands-free" configuration. When the headset is connected to the phone, you can use the buttons on the headset to talk through the headset, answer incoming calls and make outgoing calls, listen to music, and adjust the volume.The biggest selling point of this product is not only can be used as a wireless motorcycle intercom helmet earphone, but also can be used as a wired motorcycle helmet earphone.This selling point is a highlight in the current intercom headset market.Product Features:  (1) Direct full-duplex intercom between Bluetooth helmet headset and Bluetooth helmet headset up to 800-1000 meters.  (2) Can make calls, reject calls and hang up.  (3) Automatic answering phone function.  (4) Support FM radio function.  (5) Support voice switching.  (6) Enjoy music from your mobile phone or connect to GPS via A2DP.  (7) The previous song, next song, play, pause can be controlled by AVRCP.  (8) It can realize automatic switching between Bluetooth mobile phone, intercom call, stereo music and FM radio.  (9) There is DSP noise cancellation and wind sound processing to ensure clear call quality when running at high speed.  (10) The waterproof and sunscreen design of the button panel is durable.  (11) Support for last code redial.  (12) Wired to MP3, GPS, mobile phone, walkie-talkie, etc. via audio cable.Hardware parameters:Bluetooth version: 3.0+EDROperating frequency: 2.4GHzSupport Bluetooth protocol: A2DP, AVRCPBluetooth support: Bluetooth Headset and Hands free Profiles with Automatic DetectionWorking range: 10 meters maximum (mobile phone)Type of battery : 450mAh rechargeable lithium batteryStandby time: less than 300 hoursTalk time: less than 10 hours (mobile phone)Talk time: less than 8 hours (intercom mode)Charging time: less than 3 hoursPower Charger: DC5V 500mA (optional)