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| Part Number: | WM-R57A | 
| Category: | Audio Products | 
| Subcategory: | Speakers | 
| Manufacturer: | Panasonic Electronic Components | 
| Packaging: | Bulk | 
| Product Status: | Obsolete | 
| Technology: | Piezo | 
| Type: | General Purpose | 
| Frequency Range: | 150 Hz ~ 100 kHz | 
| Frequency - Self Resonant: | - | 
| Impedance: | - | 
| Efficiency - dBA: | 70.00 | 
| Efficiency - Testing: | 500mm | 
| Efficiency - Type: | Sound Pressure Level (SPL) | 
| Power - Rated: | - | 
| Power - Max: | - | 
| Port Location: | Top | 
| Shape: | Rectangular | 
| Material - Cone: | - | 
| Material - Magnet: | - | 
| Ingress Protection: | - | 
| Ratings: | - | 
| Termination: | Solder Pads | 
| Size / Dimension: | 2.264" L x 2.205" W (57.50mm x 56.00mm) | 
| Height - Seated (Max): | 0.079" (2.00mm) |