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)