Made by Hollow Tech 9687 Original Secret Service SP SWAT Canal Type Transparent Tube Earphones 1 Pin L Shape One Ear with Rotating Clip Curl Cord Tube

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. Made by Hollow Tech [HT] 9687 Original Secret Service/SP/SWAT Clear Type Earphones Secret Service: You can hear the voice discreetly like special forces. The connection part with the tube uses a reinforced joint method with an emphasis on durability! Adopts ultra-small L-type jack (2.5mm), no microphone function Frequency characteristics: 20Hz~3500Hz Rated power: 5mW maximum Spare earpiece included! Reliable Hollow Tech 2.5mm jack. Conversion parts are required for 3.5mm terminals.