The product is compatible with most 3.5mm jack electronic devices and light weight， convenient to take along and use. 

Features: 
Compatible with most 3.5mm jack electronic devices.
With aircraft engine type spiral structure， reduce the effect of resonance， good timbre.
Safe， high-grade material， good quality.
High sensitivity， good sound quality.
With microphone， convenient to use.
Light weight， convenient to take along and use.

Note:
Key function can NOT support part of the phone.

Specifications:
Brand: UMI
Name: VOIX 
Material: Aluminium alloy
Earphone Type: In-ear
Color: Black
Cable length: 1.2m / 3.9ft
Speaker sensitivity: 100+3dB
Frequency response: 20-20.000Hz
Speaker impedence: 32ohms
Earphone weight: 16g / 0.6oz
Package size: Approx. 7.5 * 7.5 * 2.8cm / 2.9 * 2.9 * 1.1in
Package weight: Approx. 63g / 2.2oz

Package including: 
1 * Earphone
4 * Earbud
1 * User manual (English)