• 4 keys : Replay; zero; plus; minus
• three digital display : 000-999
• Voice synchronous playback of the current value, the power is 0.5W
• Voice in two ways: Chinese, English
• Function stability; the only property on the market is currently the most stable voice counter; support for an external amplifier
• voltage range 5V ~ 12V; pronounced hi-fi radio speech; clear sound; beautiful
The product can be customized features, cheap, cost-effective.