Features: With 2 ring modes, providing standard bells, and surrounding & convoluting bells. 6 modulation waves: Sine , Tri 1, Tri 2, Saw up, Saw down and trapezoid . When rate is Normal, this function close. Through the speed, depth, frequency and the ratio of dry and , can be immersed in the dream of the melodious bell series. This effect pedal has function,which realize different bells vibrating according to change of force and bell's hardness in the process of knocking. Aluminum alloy shell, durable and solid; dual power supply ways for you to choice: DC 9V power adapter or 9V battery by battery cable(power adapter and battery are not included) Specifications: Material: Aluminum Alloy Working voltage: DC 9V Chip inner voltage: 1.8V Chip outer voltage: 3.3V ADC SNR: 95dB DAC SNR: 100dB Power Supply: DC 9V power adapter (Plug polarity is Positive on the barrel and negative in the center) or 9V battery(both are not included) Item Size: 12 * 6.5 * 3.5cm/ 4.7 * 2.6 * 1.4in Item Weight: 270g/ 9.5oz Package Size: 14.5 * 9 * 6cm/ 5.7 * 3.5 * 2.4in Package Weight: 390g/ 13.8oz Note: Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * Battery Cable