This Bluetooth Car Rearview Mirror is smart and safe, allowing you to keep your eyes on traffic while making and receiving handsfree calls. Simply snap it over your existing rear view mirror and you are ready to hit the road! At a Glance... Easy DIY installation. Snap on vice grips with rubber pads securely fasten over existing mirror. Bluetooth device with wide angle mirror for maximum safety. Detachable Bluetooth earpiece for call privacy. Backlit LCD shows call information when making or receiving call.Manufacturer Specifications Main function: Bluetooth Car Rearview Mirror Color: black Bluetooth version: 2.0 + EDR Bluetooth support: HSP (Headset Profile), HFP (Hands Free Profile), A2DP (Advance Audio Distribution Profile) Operating frequency band: 2.4 - 2.48GHz, unlicensed ISM Operation range: 10 meters Built-in MIC: yes Built-in speaker: yes TTS (Text To Speak) function: incoming call number Caller ID display: up to 200 names or numbers Echo cancellation, noise suppression, full duplex sound quality: yes Phone book synchronization function: yes One-touch answer, call reject, last number redial, individual voice dialing: yes Headset and handsfree profile: yes Music Format Supported: MP3, WMA Input slots - USB - mini USB - SD/MMC card FM radio frequency: 87.5 - 108.0MHz Bluetooth earpiece working time: 8 hours Power source - rechargeable 1700mAh lithium battery (included) - car power adapter Battery life: 2 hours Operating temperature: -20 to 70 degrees C Dimensions: 292 x 90 x 17 (mm)Product Notes LCD hides behind mirror when not in use. Built-in speaker and MIC, plus Bluetooth earpiece for conversation privacy. Ideal for people often on the road for work and personal purpose.Package Contents Rearview mirror Bluetooth earpiece Car power adapter English user manual