| | MA4120 | | | | Min 100dB | 2.5-60 KHz | | 20khz 41mm Piezo Tweeter Speaker Waterproof Ultrasonic Speaker |
| | MA161H103 | | | | Min 110dB | 2.8 KHz | | 161mm 2.8khz 110dB Piezo Ultrasonic Speaker for bird repellent |
| | MA3825 | | | | Min 100dB | 2.5-60 KHz | | 38mm 25khz 2.5~60kHz High Frequency Round Piezo Ultrasonic Speaker |
| | MA8527 | | | | Min 92dB | 2.4-27 KHz | | 2.4khz to 27khz 84mm 92dB 12v Piezo Tweeter Speaker for bird repeller |
| | MA5120N | | | | Min 90dB | 2.5-60 KHz | | 51mm High Frequency Round Piezo Tweeter |
| | MA5120 | | | | Min 100dB | 2.5-60 KHz | | Repellent Device Ultrasonic 20khz Annunciator Speaker |
| | MNC40N08A | 20 * 40MM | 1.0w | ohm±15%Ω | 86±3dB/W/M | 25~40khz(±5) KHz | 11.0*2.0 | 8ohm 2w Speaker Parts Notebook Speaker Unit |
| | MNY20N08A | | 0.25w | 8ohm±15%Ω | 87±3dB/0.1W/0.1 | Fo-20kHz | NdFeB | 20mm Frequency Range Mylar Oval Electronics Speaker with 8ohm 0.25W |
| | MNY30N08A | | 0.25w | 8ohm±15%Ω | 91±3dB/W/M | Fo-6kHz | NdFeB | Aluminum Shell Internal Magnet Speaker 8ohm 0.5w 30mm Headphone Speaker |
| | MNY23N08AB | 23 * 3.5MM | 0.25w | ohm±15%Ω | 87±3dB/0.1W/0.1 | Fo-20kHz | NdFeB | Micro Speaker Component 4ohm 8ohm 0.25watt Speaker Driver Unit |
| | MNY36N08AB | | 0.25w | ohm±15%Ω | 91±3dB/W/M | Fo-6kHz | NdFeB | 4 ohm mylar speaker 0.25watt multimedia round speaker 36mm |
| | MS1540A | | 0.5(0.8) | 8±20% ohm | 88±3 at 1k,1.6k,2k,3.2kHz, 0.1m0.5W | fo~6000 | | 8 Ohm Mini SMD Speaker 15*4.0mm For Big Headphones |
| | MNS13H041R8MW50 | | 0.5w | 8ohm±15%Ω | 86±3dB/W/M | Fo-20kHz | | 13mm Driver Unit 8 Ohm 0.5w Cable Speaker Mini Cellphone Speaker |
| | MRS1115H025R6T | | 1W（in 1cc box） | 6±20% Ω /2.0KHz/2.45Vrms | 93±3 dB SPL /2.45Vrms/10cm at 2KHz in 1cc box | f0HZ ~20KHz | | 15mm Portable Internal Speaker for Mobile Phone |