Welcome to our store! 1. Phone Recorder: Compatible with all analog phone lines, this recorder allows high-impedance recording for excellent sound quality. 2. Loop Recording: First-in, first-out mode. When the memory is full, loop recording overwrites the oldest recording file. 3. RJ11 Interface: Connect the phone via the RJ11 interface, and the recorder will automatically recognize the input and output. 4. Smart Charging: The USB interface makes charging easy – just plug and play. The ASIC is powered by the phone system. 5. Easy Storage: Works with a memory card to protect the WAV audio file, which can be read directly via the U-disk function. Item Type: Telephone Call Recorder Item Model: TELREC01 Product Color: White Memory: Maximum support 32GB memory card (not included). Phone Interface: RJ11 Charging Interface: Micro USB interface Loop Recording: Supports loop recording. Data Reading: Recording file can be read directly via U-disk function. Supported Phone Types: All analog phones are supported. Audio Format: WAV Working Temperature: 0 - 40 ℃ Battery Type: Built-in 3.7V 750mAh lithium-ion battery (included). Battery Model: 14500 Battery Capacity: 750mAh Includes: 1 x Telephone Call Recorder 1 x Cover 1 x Data Cable 1 x Phone Wire 1 x User Manual Your 100% satisfaction is our top priority. We are committed to providing you with the best service. If you encounter any issues upon receiving the product, such as damage or incorrect quantity, please contact us immediately, and we will provide you with the best solution!