Revolabs RF-Armor™ Lapel Wireless Microphone is impervious to Radio Frequency (RF) interference! The RF-Armor version has exceptionally robust shielding which enables the microphone to operate cleanly even when in direct contact with all wireless electronic devices known to cause unwanted audio interference, such as GSM mobile phones, smart phones, etc. 

Please note:  the RF-Armor version of the Solo Wearable Wireless Microphone captures sound in an omni-directional* pattern which is different from the standard version of the Solo Wearable Wireless Microphone which uses a cardiod pattern. This means it may not be suitable for speech recognition as it may pick up too much background noise.