... 21cm*6cm*6.7cm High Quality Crystal Anti-radiation Telephone Handset with Volume Control Our PL-168C retro anti- ... optional)Material: ABSCharacteristic: with LED light, volume control wheel, high quality speaker and receiver Support: Samsung digital products (if ... removal technique, built-in radiation intercept RPU system, mobile sound card control to adjust volume.Method: home, travel, office, gift ...