FEEL THE SILENCE Enjoy Hi-Fi stereo sound. JAPANESE ENGINEERING Advanced sound tuned by Aiwa audio engineers Active Noise Cancelling: How does it work? Mute external noise with ANC button Features Active noise cancellation to silence city traffic, cabin noise or a busy office. Bluetooth connection. Microphone for calls, works with all iPhone models and other smartphones. With independent on-board controls, track management and call reception. Battery specifications Rechargeable battery Lithium-ion polymer battery 290 mAh Music playback and talk time: 18 hours Charging time: 3 hours Audio Driver unit 40mm Dynamic driver, N40 neodymium magnet. Frequency response: 20Hz- 20KHz Sensitivity 105dB Impedance 32 Ohms Power: 10 mW Connection Wireless connection or via a 3.5 mm audio cable Bluetooth v 4.0 Bluetooth solution: CSR8635 Bluetooth Profile A2DP/AVRCP/HSP/HFP Operating distance:10M ANC Specifications ANC working time: up to 8 hours Noise reduction performance: up to 18dB Features Suitable for all devices. High school bass is very balanced and layered，high fidelity. High quality cushion generated with rich and full sound Adjustable headband Hyper Bass Ultra lightweight: 16.60 grams (with cable and battery) What’s in the box? HSTBTN-800BK Headphones Carrying bag Aiwa Nylon braided cable with aluminum connector. Aux In Cable User manual EU Declaration of Conformity Social Media Card