Reverb pedals can be very expensive. This is one of the best value reverb (not just slap back delay) pedals on the market. It provides a range of excellent useable reverb tones.  

The controls have the following functions:

RES - Think of this control as how big the room is that the echo is in.

CFR - A tone control.

LPF - Adds warmth to the effect.

PRD - Sets delay time.

MIX - Sets the amount of reverb.

DECAY - Sets the length of reverb.

Features:

1.True Bypass design, with aluminum alloy casing

2. Power Requirement: 9V DC center negative

3. Current consumption: 50mA

4. Product Dimensions: 11.2x6.4x3.4cm

5. Weight:0.23kg