Features: Wireless Music ReceiverThis receiver can stream music from cell phones, computers, and other digital products to your home or car audio system. Upgrade your car or home audio to Bluetooth-compatible audio. Bluetooth-compatible 5.0Equipped with an advanced Bluetooth-compatible 5.0 chip, it has stable connection, fast transmission, and wide signal range. Intelligent Noise ReductionOur receivers feature intelligent noise cancellation that reduces ambient noise, giving you clear call sound. Hand Free CallingBuilt-in microphone supports hands-free calling, one-key answering, intelligent navigation. You dont have to look down the phone on the move. Make sure you drive safely. Long Use TimeBuilt-in 140mAh battery supports up to 11 hours of play/call time. And its 3.5mm audio output interface allow it compatible with smart devices. Specifications: Material: Plastic Color: Black Size: (Approx)(LxWxH) 5.95x2.2x1.2cm/2.34x0.87x0.47inch Bluetooth-compatible version: 5.0 Power by: 1 x 140mAh rechargeable battery (Built-in) Output Device Interface: 3.5mm Jack Transmission distance: 10m/33ft Use time: 11H Package Included: 1 x Bluetooth-compatible AUX Receiver 1 x USB Charging Cable 1 x 3.5mm Audio Adapter 1 x Instruction Manual Note: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.