• Compact and lightweight, the BY-W4 weighs less than 13g and can be clipped to clothing or placed on a desk
• 2.4GHz wireless transmission technology, low latency, more stable signal transmission
• The transmitter can work continuously for 7 hours after being fully charged
• Equipped with a one-button mute, multi-level gain adjustment function
• With 4 transmitters can satisfy 4 people recording at the same time
• Applicable to various scenarios such as live broadcasts, vlogs, news interviews, etc.
• Compatible with various recording devices such as cameras, mobile phones, and tablets

Specifications:

• BY-W4TX
• Transmission method: 2.4GHz ISM
• Signal Modulation: Gaussian Frequency Shift Keying
• Polar pattern: omnidirectional
• Operating range (obstacle-free): up to 30m
• RF output power: <10mW
• Frequency Response: 50Hz-16kHz
• Signal-to-noise ratio: >78dB
• Sensitivity: -42dB
• Built-in lithium battery specification: 3.7V/110mAh
• Charging interface: Type-C
• Charging time: about 2 hours
• Battery life: about 7 hours
• Weight: about 12.5g
• Size: 17.7*59*10mm
• BY-W4 RX
• Transmission method: 2.4GHz ISM
• Signal Modulation: Gaussian Frequency Shift Keying
• Operating distance (obstacle-free): up to 30m
• RF output power: <10mW
• Audio output interface: 3.5mm TRRS output hole
• Built-in lithium battery specification: 3.7V/200mAh
• Charging interface: Type-C
• Charging time: about 2 hours
• Battery life: about 7 hours
• Weight: about 18g
• Size: 20.2*65*12.8mm