一二三国产视频/中文字幕免费高清在线/爱福利视频/日韩av入口 - 狠狠狠狠狠干

? Features a quality Stainless Steel Chestepiece for superior acoustical performance  
? Dual lumens Y-tubing provides separate sound pathways to each ear for unrivaled accuracy
? Unique designed binaural spring encased in plastic and the binaurals ear tube could be adjusted to a suitable angle for greater comfort
? Soft screw-on plastic eartips provides comfortable use
? Overall length 26"  
? Accessory box includes two pairs of soft eartips and one diaphragm
? Individually packaged in an attractive gift box with lined foam 
? Latex free