Product information：

Recording mode: one-key recording
Recording format: WAV
Recording time: 900 (minutes)
Maximum number of recording files: 999
Memory card type: does not support expansion cards
Display: No screen
Transmission interface: USB 2.0
Microphone: Condenser microphone
Number of microphones: one-way
Recording distance: 10
Video: Does not support video shooting
Battery: Lithium battery
Shell material: zinc alloy shell

Packing list：

Recording pen*1