Baby Monitors features: 2.4GHz Wireless Infant Baby Audio Monitor Support 2-way Audio Voice Monitoring Crying Alarm for Baby Safety Security Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Features: *2.4GHz digital wireless transmission, stable transmission signal. *Built-in MIC and speaker for two-way audio monitoring. *High sensitivity, the crying voice is easy to be heard and the lamp will turn on to inform parents. *Easy pairing, plug and play in. *Position the transmitter at a distance of about 1.5-2.0 meters from the baby. *Both parent unit and baby unit can be powered by DC 5V or 3*1.5V AAA battery. Baby Unit Specifications: Charge Voltage: DC 5V Transmission Frequency: Ism 2400~2483MHz Transmission Power: 17dBm Modulation Type: FSK Operating Temperature Range: -10℃~+60℃ Storage Temperature: -40℃~+70℃ Dimensions: Approx. 62mm*40mm*103mm(L*W*H) Weight:Approx. 57g/2oz Parent Unit Specifications: Charge Voltage: DC 5V Transmission Frequency: Ism 2400~2483MHz Transmission Power: 17dBm Modulation Type: FSK Power Consumption: 60mA Operating Temperature Range: -10℃~+60℃ Storage Temperature: -40℃~+70℃ Dimensions: Approx. 62mm*40mm*103mm(L*W*H) Weight:Approx. 60g/2.12oz Package Information: Package Size: Approach. 23.5*13.5*5.5cm/6.7*5.7*2.75in Package Weight: Approach. 350g/0.76lb Package List: 1 * Parent Unit 1 * Baby Unit 2 * UK Power Adapter 1 * User Manual (English)