What's in the box:

MOOER ENVELOPE Analog Auto Wah Guitar Effect Pedal True Bypass Full Metal Shell

Features:
Auto wah effect pedal, ideal for using with guitar or bass.
100% true analog circuit provides a lush warm sound.
4 control knobs(SENSITIVITY, Q, DECAY and TONE) make the pedal very versatile.
Micro size and full metal shell, portable and durable.
With true bypass footswitch and LED indicator light.

Control Knobs:
SENSITIVITY-- adjusts the dynamic response of the envelope filter in relation to the input from the instrument
Q-- Clockwise will make the Q value higher, providing a more narrow frequency band with a higher peak; Counterclockwise will lower the Q value, providing a wider frequency band with a lower peak
DECAY-- adjusts the release and closing of the filter
TONE-- adjusts the overall tone and frequency range of the pedal

Specifications:
Material: Metal
Signal Input: 1/4Monaural Jack (impedance: 1Meg Ohms)
Signal Output: 1/4Monaural Jack (impedance: 1K Ohms)
Power Supply: DC 9V adapter (center minus plug)(not included)
Working Current: 20mA
Item Size: Approx. 3.5 * 9 * 3cm / 1.4 * 3.5 * 1.2in
Item Weight: Approx. 150g / 5.3oz
Package Size: 10.5 * 6 * 4.5cm / 4.1 * 2.4 * 1.8in
Package Weight: 175g / 6.2oz

Note:
The power adapter is not included.
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 * User Manual(English & Chinese)