7RYMS WA2 Mini Portable Voice Amplifier with 2.4G Wireless Lavalier Microphone Megaphone Booster Support Bluetooth and AUX Teaching Speaker Mic with Noise Reduction for TeachingGuidePresentationSpeech

7RYMS WA2Mini Portable Voice AmplifierQ&A1. How to connect the WA2 with a computer?A: It can connect with a computer via the AUX interface.2. Can the WA2 amplifier be connected to other wireless lavalier mics?A: No, it only supports the matched WA2 wireless lavalier mic.3. Will the WA2 produce howling? How to avoid howling?A: Keep the wireless microphone lavalier mic away from the amplifier or turn down the volume to prevent howling.4.What's the battery life of WA2?A: A single charge supports 23H duration. It can be used for 28 days if the usage frequency is 50 minutes per day.5. What should you do if there is no sound from the amplifier?A:  1. Please check the amplifier’s battery power and if the power is turned on.      2. Please check if the audio source and the audio cable is normal.      3. Please check if the signal output from the audio source is normal.      4. Please check if the volume level of the amplifier or audio source is minimized.      5. Please check if the wireless mic is turned on.6. Please restart the device.Packing ListWirelss Lavalier Mic(TX)1Amplifier(RX)1Magnetic Back Clip1Charging Cable1Strap1Backup Magnet1User Manual1Warranty Card1Notice1. Please aim the microphone capsule at the sound source to get an excellent recording.2. The lavalier mic and amplifier will automatically turn off if it not used for 30 minutes.3. Do not place the lavalier mic next to the amplifier when using it, otherwise howling may occur.4. The amplifier’s external mic port only supports cardioid mics specially used for amplifiers. It does not support common lavalier mics, otherwise howling may occur.5. When the lavalier mic is moved from the amplifer, both the mic and the amplifer will automatically power on.6. The product is a high-precision equipment, please prevent it from falling, collision, or pounding.7. Do not use this device near sources of heat or interference, such as radiators, ovens, refrigerators, air conditioners, etc. 8. Please do not use the equipment in rainy or damp environments to avoid short-circuit danger.9. Please keep the product in a dry environment.