CLiPtec BME821 Dual Dynamic Drivers in
Ear Earphone is with two 9mm dynamic drivers in a single earphone; it even uses frequency division technology to output bright treble and deep bass respectively. Therefore, the dual dynamic driver earphone not only adds a speaker on the ordinary earphone, accordingly it produces a shock effect comparable to that of the balanced armature driver earphone in the sound quality. The microphone and volume control in-line design also provides easily switch between making calls and listening to music with smartphone directly. The TPE wire material is to perform the quality and stylish of this earbud.

| Speaker Specification | |
| Driver | 9mm x 2units |
| Sensitivity | 108dB+/-3dB |
| Frequency Range | 20Hz – 25KJaaaaa |
| Impedance | 32Ω +/- 5% |
| Maximum Power Input | 10 mw |
| Rated Power | 3 mw |
| Microphone Specification | |
| Sensitivity | 38dB+/-3dB |
| Dimension | 2.2(D) x 1(H)mm |
| Impendence | 2.2k ohm |
| Earphone Specification | |
| Cable Type | TPE |
| Connectors Type | 3.5mm Stereo Jack |
| Cable length | 1200 mm |
| Weight | 13 g |