Overview: FLANG GS1 Wireless BT 5.1 Receiver turns the traditional headphones, speakers, amplifiers and others into BT-enabled ones. With built-in microphone, it enables hands-free calls to ensure driving safety. Built-in 200mAh Battery ensures more than 10 hours of working time. It can also work as a camera shutter. Compact and portable with a back clip, convenient to use. Features: [BT Audio Receiver] It turns the traditional headphones, speakers, amplifiers and others into BT-enabled ones. After paired, play music wirelessly from your BT-enabled audio devices without the hassle of cables. [Advanced BT Technology] Wireless 5.1 technology ensures transmitting strong signals in high-quality and high speed. BT range reaches up to 10 meters in open space without obstacles. [Hands-free Call & Multi-pairing] With built-in microphone, it enables hands-free calls to ensure driving safety. Multi-point connection function ensures to switch between your business and personal phones. [Strong Compatibility] Compatible with Android and iOS smartphones, tablet PC and more BT-enabled audio devices. 3.5mm audio port design, suitable for non-BT speaker, amplifier and other stereo systems. [Low Power Consumption] Built-in 200mAh Battery ensures more than 10 hours of working time. Compact and portable with a back clip, convenient to use. Supports independent volume adjustment. [Shooting Remote Control] Works as a camera shutter. Pair with your phone via BT, and just turn on the photographing function on your phone, click the photo shooting button to take photos. Specifications: Brand Name: FLANG Model Number: GS1 BT Version: BT5.1 Operating Distance: 10m/49.2ft (no obstacle) Output Connection: 3.5mm AUX Output Port Built-in Battery: 200mAh Rechargeable Lithium Battery Working Time: >10 hours Charge Port: Micro USB 5V Material: Plastic Color: Black, White (Optional) Item Size: 6.8*2.3*1.4cm/2.67*0.90*0.55in Item Weight: 14g/0.49oz Package Size: 10.5*6.2*3.0cm/4.13*2.44*1.18in Package Weight: 44g/1.52oz Package List: 1 * BT Receiver 1 * USB Charging Cable 1 * English-Chinese User Manual