Welcome to our store! Phone Recorder: This recorder is applicable to all analog telephone lines and allows high impedance recording for good sound quality. Loop Recording: In first-in-first-out mode, when the memory is full, loop recording will overwrite the oldest recording file. RJ11 Interface: If you connect the phone via the RJ11 interface, the recorder will automatically recognize the input and output. Smart Charging: The USB interface makes charging very easy, just plug and play, and the ASIC will be powered by the telephone system. Easy Storage: Can also work with a memory card to protect the WAV audio file, which can be read directly via the U-disk function. Item Type: Telephone Call Recording Item Model: TELREC01 Product Color: White Memory: Maximum support 32GB memory card, delivery without memory card. Telephone Interface: RJ11 Charging Interface: Micro USB interface Loop Recording: Support loop recording. Data Reading: The recording file can be read directly via the U-disk function. Supported Phone Types: All analog phones are supported. Audio Format: WAV Working Temperature: 0 - 40 ℃ Battery Type: Built-in single 3.7V 750mah lithium-ion battery, comes with built-in battery. Battery Model: 14500 Battery Capacity: 750mAh 1 x Phone Recorder 1 x Shell 1 x Data Cable 1 x Telephone Cable 1 x User Manual Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.