Feature: 1. Aluminum Alloy Housing: VU meter is made of aluminum alloy housing, which is robust and long lasting. 2. 1.3 inch Display: VU meter with 1.3 inch display, showing the real level value in the full frequency range. 3. Key Adjustment: VU meter can adjust gain by toggling up and down, switch mode by short press, and mirror display by long press. 4. 12 Kinds of Image Display: Sound level meter has 12 kinds of image display to meet the needs of different scenes. 5. With USB Cable: VU panel meter is equipped with a usb cable, long life, to meet your use needs. Specification: Item Type: VU Meter Material: Aluminium Alloy Voltage: DC5V Current: <0.1A Sensitivity: 42dB Resolution: 240x240dpi Color: 16 Bit True Color MIC: Silicon Mark Gain Adjustment: 1-99% Timing Mode: Manual, GPS (Need Adapter). Package List: 1 x VU Meter1 x USB Cable Note: The product has no built‑in battery and does not support charging.