This is a pair of bass-driven metal earphones. No copper oxide wire design， anti-winding， you can enjoy music without bother of messy cables. This earphones has microphone for calls receiving and voice conversation. It will surely make your audition experience fantastic.

Features:
Ultra light metal material， durable and lightweight headphones.
Powerful driver unit， stereo sound， deep bass， noise reduction.
3 pairs of soft ear buds provide a super comfortable， noise reducing fit.
Pause and start button， easy to control music playing.
Microphone design allows you to answer calls.

Specifications:
Style: In-ear
Impedance: 18┯ ÷ 10%
Response frequency: 20Hz-20KHz
Sensitivity: 102 ÷ 3dB
Distortion: ● 3%
Connector: 3.5 mm
Color: Yellow， rose， blue， green， black (optional)
Material: TPE
Cable length: 120.0cm / 4.0ft
Item weight :14.0g / 0.5oz
Package size: 17.5 * 9.0 * 2.6cm / 6.9 * 3.5 * 1.0in (L * W * H)
Package weight: 45.0g / 1.6oz

Note:
If listening to music at 70% of full volume daily， please ensure not exceeding 4.5 hours; if 80% of full volume， please ensure not exceeding 1.5 hours!

Package list:
1 Piece * Earphone ( a pair of soft ear buds preseted)
2 Pairs * Soft ear buds ( different size )