Features 1. Built-in answering button; the wireless distance between the earphone and the neck ring is approximately 20 cm. 2. Compatible with Android phones, tablets, Kindle devices, e-readers, and any portable device equipped with a standard 3.5mm audio jack, including phones and MP3 players. 3. Compact size, lightweight design, discreet fit, clear sound quality, and long battery life. 4. Comfortable and secure fit; high-strength cord allows for easy removal from the ear canal. 5. Constructed with high-quality materials for durable everyday use. Specifications Product model: DK06 Cable length: approximately 1.6 m (5.25 ft) Headphone jack: 3.5 mm Shape: Anatomical design Receiver type: Magnetic / Analog Maximum output: 110 dB Battery type: SR416SW / 337 Battery life: Up to 8 hours Package Contents 1 x Headphone cable 1 x Earphone 2 x Replacement batteries Instructions 1. Open the battery compartment, insert the battery correctly, and gently close the battery door. Insert the earpiece into the ear canal while holding the handle; a slight sound indicates the device is functioning. 2. Adjust the volume on your audio device to a comfortable level. 3. Set your mobile phone to auto-answer or vibration mode if applicable. 4. Place the induction loop around your neck and connect it to your audio device (mobile phone, radio), positioning it under or near clothing. 5. When used with a radio system, the induction loop receives signals from the transmitting device and sends them to the earpiece, which converts electromagnetic signals into audible sound for wireless listening. Communication range depends on the radio's transmission power. With a mobile phone, communication is possible wherever network coverage is available. Note Please note that new and old versions of this product may be shipped at random. Please ensure you are comfortable with this before placing your order.