Description (from YesAsia)

Following last year’s summer special single, f(x) is finally releasing their first original single in Japan! The popular K-pop girl group’s new double A-side single features the Japanese version of their 2015 K-pop hit 4 Walls and the new original song Cowboy.

Technical Information

Product Title:	4 Walls / COWBOY (SINGLE+DVD) (Japan Version)
Singer Name(s):	f(x)
Region Code:	2 – Japan, Europe, South Africa, Greenland and the Middle East (including Egypt)
Release Date:	2016-11-02
Publisher Product Code:	AVCK-79347
Language:	Japanese
Disc Format(s):	CD
Picture Format:	NTSC
Other Information:	Single /CD+DVD
Package Weight:	200 (g)

+ (via CDJapan)

First Press Detail	a trading card randomly selected from four kinds

Tracklist

CD Version:

01 4 Walls
02 COWBOY
03 4 Walls inst
04 COWBOY inst

CD+DVD Version:

DISC1 [CD]
01 4 Walls
02 COWBOY
03 4 Walls inst
04 COWBOY inst
DISC2 [DVD]
01 4 Walls Music Video –Japanese Ver.-
02 4 Walls Music Video Making
03 4 Walls / COWBOY Jacket making