Cubetek 2 in 1 Bluetooth Transmitter & Receiver Adapter V4.1, with Digital Optical /TOSLINK / SPDIF, 3.5mm Aux Connect, Model: CB-BTI-029 CUBETEK 2 in 1 Bluetooth Transmitter and Receiver with Bluetoth V4.1 Is a portable handy device, allows you to wirelessly stream your favourite movies, music, games, or other media from non-Bluetooth sources straight to Bluetooth headphones, or speakers. It also allows traditional audio devices like home and car stereos to receive music from your mobile or tablets.Product Feature: 1. 2-In-1 Bluetooth Adapter, One-button switch to shift between transmitter(TX) and receiver(RX) mode easily.2. This transmitter allows pairing up to 2 devices( bluetooth headset/speaker), which means you can watch TV or listen to music with others.3. Compact, lightweight and durable. Take it with you and enjoy music anytime/anywhere for up to 14 hours.Fblue Can work while charging. Micro charging port.4. Easy to Connect, Auto pairing makes your life wire-free, hassle-free 5. Multi-point and dual-streaming features: Using dual-streaming, you can send audio signals to two audio output devices simultaneously. When in receiver mode, the adapter can receive signals from two wireless audio sources with the multi-point feature. Thus, you can swiftly and conveniently swap between music libraries on both devices.Specifications: version: CSR BC8670 Bluetooth 4.1, Class Transmission range: 10 meters (up to 33 ft)Working time:TX Mode: Up to 14 hoursRX Mode: Up to 14 hoursBattery Capacity: 280 mAhCharging time: 2 hours Standby time : 250 hoursSize: 49*13mmWeight: 21gms Bluetooth Profile: A2DP, APT-X LL(TX), APT-X(TX), SBC(TX), SBC(RX) Package Includes:1 x Audio Adapter1 x Digital Optical Toslink Cable1 x 3.5Mm Audio Cable1 x Micro Usb Charging Cable1 x 3.5Mm Female to 2 RCA Male Cable1 x user Manual.