Seiko Rechargeable Chromatic Guitar Tuner STX7

Seiko clip on headstock tuner with USB-rechargeable battery.  Features a very handy dual-power level torch - ideal for those backstage/onstage low-light situations.Slightly larger than some on the market, but the build quality, ease of use and features more than make up for this.

Review from Music Radar said - "It may not be the most discreet headstock tuner we've encountered, but it's faultless in operation."