Code Red Headsets Shield 35 D-Ring Earpiece with 40in cord and 35 mm connector Code Red Headsets Shield 35 D-Ring Earpiece with 40in cord and 35 mm connector Features: Listen only earpiece with a miniature speaker that fits comfortably over the ear. Especially useful in noisy environments. Very popular with emergency service personnel. "D" Ring design can be worn on either ear. Nothing inserts into the ear. Since nothing is placed inside the ear, it offers safety as well as improved hygiene when it is necessary to share earphones. D-Ring Earpiece with 40" cord and 3.5 mm connector for any radio or remote microphone with a 3.5 mm earphone jack.