Specification Size : 5x7x10mm Shape : anatomical shape Receiver type : magnetic/analogue Maximmum volume : 110dB Battery : sony sr416sw/337 Battery Life : 8hrs Feature Completely hidden and discreet communication Compatible with Apple iPhones, Android phones, tablets, Kindle, eReaders, and any portable devices with a standard 3.5 mm jack. Microphone with 1-Button call for clear calls and smartphone control Support phone call, FM radio, MP3 player, etc Small, light, easy to conceal, Loud and clear voice ,Long life battery Easy and safe to wear,Clarity and high strength string help you to take out the earpiece from ear canal easily. How to use 1.Open battery door, install the battery perfectly and push battery door into battery box gently. Put the earpiece into ear canal by holding the handle and the slight sound of current indicate working order. 2.Adjust the volume of drive equipment to reach satisfaction. 3.Set mobile phone to automatic return or vibration. 4.Put the inductive loop around your neck and connect the inductive loop to the drive equipments (mobile phone, radio) which are attached to or beneath users clothing. Package List 1x Earpiece 1x Loopset 1x Battery - 337 SR416S
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