Features Enjoy your music, your radio or your apps from your phone or MP3. Answer your calls with the Voice Answer function. Connect your two telephones simultaneously. Listen and follow the instructions of your smartphone navigator. 100% compatible with all Bluetooth mobile phones and smartphones. Intuitive: only one control button integrated into the microphone. Bluetooth V.4.0 HQ sound and noise reduction technology. HF 1.0 Dual can be paired with HF3/D3 or most other INTERCOM Bluetooth devices as slave devices. HF 1.0 DUAL is 100% compatible with all Bluetooth mobile phones, smartphones and audio devices. Very easy to install, no tools are required. Bluetooth® Specification v4.0 Class 2. Bluetooth® profiles: HSP v1.2, HFP v1.6, EDR, A2DP v1.2, AVRCP v1.4, DI v1.3. Up to 10 meter range. Foam covers with Velcro fastener. One-button multifunction control. Noise cancelling microphone Technology Polymer lithium battery 110 mAh. Standby time:> 60h Charging time: 2 h. Talk time:> 7 h. Total weight: 26 gr. Operating frequency: 2.4 GHz Power supply: DC 5.0 V 500 mA Description Bluetooth® system is fully integrated into the device. 1 speaker Listen to music in high quality and follow the sound GPS instructions. Microphone built-in micro USB port. Ready to connect with Bluetooth® enabled mobile phones. Advanced multipoint connection. Connect to 2 smartphones simultaneously. Dual Link function: in addition to phone function, you can simultaneously add another sound emitting Bluetooth® device. All electronics are integrated in the speaker housing. Intuitive button on microphone. Red / blue LED status indicator on the microphone. Hands-free talking with the Voice Answer function. Very easy to install.