1) Ear bud made of Aluminum metal and crystal
2) Speaker impedance: 32Ω+/-15%
3) Driver unit: Diameter 10mm mylar speaker
4) Frequency response: 20Hz-20 kHz
5) Rated power: 1mW
6) Sensitivity: 100dB
7) Wire: Diameter 1.8mm, length 1.3M
8) Plug: 3.5mm stereo
9) Microphone: -42db+/-2db, 4.5*2.2mm
10)Max input power: 6mW
11)PU/PVC rubber for earphone wire
12)Weight: 15g
13)Application: Iphone, ipod, computer, MP3/MP4 etc.
With lifelike sound and outstanding bass response

Metal Earphone with Crystal (DT-033) product offered by Shenzhen Dtaitech Ltd.