Extracted from the HP website: ・Built-in memory: 8GB ・Power supply: 310mAh built-in lithium-ion battery, USB bus power ・Continuous recording time (when the built-in battery is fully charged): Approximately 10 hours (SLP) ・Charging time: Approximately 2.5 hours (full charge) ・External dimensions: 21(W) × 98.2(H) × 13.8(D)mm ・Weight: 54.5g ・Number of channels: 2 channels (stereo) *In SLP (longest time) mode, recording will be monaural. ・Built-in microphone: Condenser microphone × 2 (omnidirectional) ・Built-in speaker: Maximum output 450mW, monaural