Sony Wireless Audio Receiver Bluetooth Compatible MUC-M2BT1

We offer a wide variety of products, and the following precautions apply to some of them. Please note that they are listed for all products. 【Voltage Compatibility】Designed for Japanese voltage (90-110V). Using with a different voltage may cause malfunction. 【Plug Type】Japanese plugs (A or B type). Use a conversion adapter if needed. 【Transformers & Adapters】Transformers adjust voltage; adapters only change plug shape. Using an adapter without a transformer may damage the product. 【Liability】We are not responsible for damages caused by improper use, such as using the product without a transformer. Power supply: DC3.7V: Built-in rechargeable lithium-ion battery Charging time: Approximately 2.5 hours (full charge) Charging method: USB charging Battery duration (continuous audio playback time): Up to 7.5 hours Battery duration (continuous talk time): Up to 7.5 hours Battery duration (standby time): Up to 200 hours Model: MEMS Directional characteristics: omnidirectional Effective frequency band: 100Hz-8,000Hz Maximum communication distance: line of sight approximately 10m