... rubber oil, Comfortable touch feeling Anti-radiation retro phone handset Features:· Equip with a 3.5mm plug, 2 meter ... , yellow, green, blue, purple, orange, pink, and red).· Microphone sensitivity :-57dB Sensitivity: 1000dB· Frequency Range: 20-20000 Distortion rate ... Advantages:· Anti-radiation,Fidelity sound quality,Tuning sound.· The handset can reduce 96% radiation from the mobile phone to make ...