One-Touch Record Slide mic. Voice Activation. Cue Tone Index Search (Play). Cue and Review. Recording Speed 3x. Tape Counter. LED for Record. LED for Battery. Built-in Microphone Jack. Size 7.6cm - 1.3cm x 11cm x 4-1.3cm . Weight 150ml Batteries required 2 AA, included (25 hours record time). Model features: quick record/quick review, built-in speaker/microphone, earphone/headphone jack and one-year manufacturer's warranty.