Saramonic Blink Me B2 2.4G Touchscreen Wireless Microphone System (Two Transmitters, One Receiver)

The touchscreen is easy to see and operate, and the dedicated app allows you to replace the transmitter screen with your own images or logos. Operated by itself, it is an independent operation system without the need for an app. The transmitter has a built-in smart on-board recording function. (Built-in memory: 8GB) Communication: 2.4GHz digital frequency, Operating range: Approximately 100m without obstacles Operating time: Transmitter: Approximately 6 hours (Auto recording ON), Approximately 8 hours (Auto recording OFF), Receiver: Approximately 24 hours (can fully charge one transmitter)