Good Shepherd A3 Wireless Lavalier Microphone Mini Speaker Amplifier Teacher Dedicated Classroom Teaching Tour Guide Outdoor Portable Bluetooth Speaker Large Volume Long Battery Life One-to-Two

Approximate continuous usage

45 hours (~60 classes, ~45 minutes each)

Charging time

approx. 3 hours via Type-C fast charging port

Peak power output

80W (true output approx. 10W)

Battery supports long-lasting use comparable to a power bank

DSP + ANC dual-chip intelligent noise reduction and anti-howling technology

Car-grade DSP anti-howling chip for clear, distortion-free sound

Directional clip microphone with high sensitivity (-38dB±3dB), 360° omnidirectional pickup, professional large mic head technology

Automatic pairing and mute mode supported

Supports recording with one-key recording and loop playback via TF card

Supports Bluetooth and TF card playback

Simple operation with double-click M button to enter recording mode

Accessories include headset microphone, clip microphone, leather chain strap, charging cable, user manual, and packaging box

Stylish and portable design suitable for teaching, presentations, and outdoor use

DSP + ANC noise reduction algorithm effectively eliminates howling and background noise

Peak volume easily covers large spaces (up to 100 people indoor)

Stable wireless connection without dropouts

Data and performance tested by Haomuren laboratory; actual usage may vary