Ultra-Thin Card Digital Voice Recorder 4mm — Zinc Alloy Dictaphone with 750mAh Battery, ~150hr Voice-Activated MP3 Playback & 3.5mm Earphone

Slim 4mm profile and compact card form make this recorder easy to slip into a wallet or pocket for discreet capture of important conversations. Constructed from zinc alloy for durability, it combines large memory capacity with a high-capacity built-in 750mAh battery, enabling continuous recording for about 150 hours. Supports MP3 files and offers both recording and playback functions, plus volume adjustment and track switching for convenient listening. A 3.5mm wired earphone is included. Automatic voice-activated recording conserves storage and power by starting when sound is detected and stopping during silence. Dimensions: 8.6cm (length) x 5.4cm (width) x 0.4cm (height). Suited for business meetings, conferences, interviews and other recording needs.