What's in the box:

UHF Wireless Microphone System with Handheld Transmitter Receiver 500-950MHz 3.5mm Plug with 6.35mm Adapter for Smartphone Computer Speaker for Interview Activity Broadcast Hosting (Standard)

Features:
UHF Wireless Microphone System: The system includes dual headset microphone and one receiver, featuring 650MHz-690MHz UHF wireless transmission, stable connection and low distortion ensure high quality vocal sound transmission.
Condenser Handheld Microphone: Portable handheld microphone features dynamic pickup, total 23.5cm/9.25inch length makes it comfortable to hold, 2pcs AA batteries(Not included) powered for more portable use.
Receiver with 3.5mm Plug: The receiver is powered by built-in 3.7V/450mAh battery, recharged with USB cable. 3.5mm plug enables wide application with smartphone, computer and camera, adapter cable might be needed for camera connection.
Comes with 6.35mm Adapter: The 6.35mm included in the package is for wider receiver application on devices like music mixer, digital controller and speaker, more convenient to use.
Wide Application: The headset microphone system can be widely applicable for video recording, broadcast, interview, online teaching, gathering and more occasions, truly portable wireless connection.

Specifications:
Color: Black
Main Material: Plastic
Frequency Range: 500-950MHz
Signal to Noise Ratio: 96dB
Frequency Response: 30Hz-18KHz
Distortion: <0> Dynamic Range: 96dB
Delay: 2.5ms
Frequency Points: Up to 48
Transmitter Power: 10mW
Receiver Sensitivity: -96dB
Transmitter Dimension: 23.5 * 5.5cm / 9.25 * 2.17in
Receiver Dimension: 6.8 * 2.7 * 1.8cm / 2.68 * 1.06 * 0.71in
Transmitter Power Supply: 2pcs AA batteries(Not included)
Receiver Power Supply: Built-in rechargeable battery 3.7V/450mAh
Package Size: 30 * 9 * 6cm / 11.81 * 3.54 * 2.36in
Package Weight: 464g / 16.37oz

Packing List:
1 * Handheld Microphone
1 * Receiver
1 * 6.35mm Adapter
1 * USB cable