1. D’Addario Planet Waves PW-CT-05 (Pedal Tuner+Metronome), made in China. Two AA batteries. $25
2. Wittner MT-50, made in Korea. One 9V battery. $15
3. Musedo MT-30 Metro-Tuner 3-in-1 Tuner Metronome Tone Generator for Guitar, made in China. Two AAA batteries. $12
4. Sabine Zipbeat 6000 Digital Metronome. One 9V battery. $12
5. Seiko SQ50-V Quartz Metronome. One 9V battery. $22