Two modes: Needle mode (display like a classic tuner) or strobe mode (running light display)
±0.01 cent tuning accuracy
Adjustable reference tone: A = 430 to A = 450 Hz
LED display
Automatic brightness adjustment
Three bypass modes: True bypass, buffered bypass and buffered always-on
Dimensions (W x D x H): 44 x 115 x 66 mm
Power with a 9 V DC power supply unit (centre negative) or USB C 5 V (both not included)

https://www.thomann.de/hu/fender_strobo_sonic_pro_tuner_pedal.htm