Docooler Anti-Radiation Earphone Air Tube Stereo Wire Cell Phone Headsets Monaural in Ear MIC Headphones with Earbud for iPhone Samsung MP3 Tablet PC;

The product is away from electromagnetic, more environmental and have anti-radiation function.

Specifications:
Plug: 3.5mm
Impedance: 16?±20% 0.126v. at 1kHz
Frequency range: 20Hz~20kHz
Resonance frequency: 4kHz±20%
Rated input: 1mW
Max imum input: 3mW
L/R output difference: ≤3dB at 1kHz 1mW
Output sound pressure level: 95dB±5dB 1/mW
Earphone length: Approx. 120cm / 47.2in
Earphone weight: Approx. 14g / 0.5oz
Package size: Approx. 15.7 * 8 * 2.9cm / 6.2 * 3.1 * 1.1in
Package weight: Approx. 36g / 1.3oz

Package including: 
1 * Earphone
1 * Earbud (L)
1 * Earbud (M)
1 * Earbud (S)