ELECOM Stereo Earphone Knowles Balanced Armature Driver Black EHP-BS100BK

------------------------------------------------------------------------------------------------------------------ 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ------------------------------------------------------------------------------------------------------------------ Sound system: closed type Driver unit: Balanced armature type (single) Sound pressure sensitivity: 105.5dB/1mW Maximum allowable input: 40mW Playback frequency band: 20Hz to 11kHz Plug: φ3.5mm 4-pole mini plug (L type) External dimensions: Headphone body: Width 11.5mm x Depth 20mm x Height 20mm (excluding cord) Weight: Main unit: approx. 12g / Microphone section: approx. 3g (excluding cord) Environmental considerations: RoHS Warranty period: 6 months