Ban on sales in the Thai market Packaging size 28 * 18 * 8cm, 1.2kg Description: 1. 10W audio output power dependent external speaker 2. IPX5 waterproof external speaker 3. The first digital amplifier (CS8138S amplifier) for window intercom, with excellent full bandwidth EMI suppression capability, outstanding "popping" noise suppression capability, excellent lownoise suppression feedback function, no need for filtering Dclass structure, and up to 90% efficiency. Function: 10W audio output power from external speaker 3.6W highquality host with builtin speaker IPX5 waterproof rating & 9679; Recording function & 9679; External MIC connection Ctype charging port & 9679; Internal volume adjustment & 9679; External volume adjustment Description:   Working voltage/current DC 5V/1200mA Output power 3.6W+10W Microphone sensitivity -44dB ± 1dB 20Hz~16KHz Main station size 118 * 90 * 45mm Expansion size 107 * 85 * 40mm Weight 800 grams External mute on/off Internal microphone Internal mute on/off External microphone Recording jack standard 3.5mm recording jack Microphone jack standard 3.5mm microphone jack   Standard accessories: 1x window intercom host 1 external speaker 1 power adapter 1 x charging wire 1 x Gooseneck Microphone 1 user manual