Features: 1. The latest version of the Bluetooth chip, V5.0 + EDR, provides stable performance. 2. Voice broadcast function. 3. Automatic power-on and power-off functionality helps save effort and worry. 4. 550 mAh battery capacity. 5. Call duration of approximately 10 hours. Hands-free car speaker kit for cell phone with advanced multi-point connection, supporting two mobile phones connected simultaneously. Built-in DSP noise suppression and echo cancellation technology. Specifications: Bluetooth transmission distance: 10M Speaker: 4Ω 2W, high-definition stereo sound Dimensions: approximately 100 x 60 x 21mm (3.94 x 2.36 x 0.83 inches) Color: Black Charging time: approximately 2 hours Battery capacity: 550 mAh Call time: approximately 10 hours Standby time: up to 500 hours Bluetooth version: V5.0 + EDR Transmission distance: 10M Package Included: 1 x Car charger Notes: 1. Due to differences in monitor displays, the image may not reflect the actual color of the item. The style will match the pictures shown. 2. Please allow slight dimensional variations due to manual measurement.