Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

The headphone amp is compact and light-weight design， not bigger than a hand of the adults， easy to use and carry.Features:Helps to deliver high-quality guitar sounds， plus a digital delay effect.Designed with 3 knobs: echo/ F.back / time knob.AUX jack lets you connect an external audio device to this jack.Uses the headphone jack to connect headphone， portable speaker or mixer.Powered by the built-in battery.Comes with a USB cable for charging the item.Compact and light-weight design， not bigger than a hand of the adults.Specifications:Power Supply: Built-in rechargeable batteryWorking Current: 80mAItem Size: Approx.8 * 8 * 1.2cm / 3.1 * 3.1 * 0.5inItem Weight: Approx.38g / 1.3ozPackage Size: Approx.14 * 11 * 2cm / 5.5 * 4.3 * 0.8inPackage Weight Approx.74g / 2.6ozNote:The headphone is not included.Package List:1 * Headphone Amp1 * USB Cable