Advanced Acoustic Technology Corp. (AATC) AD-3A3G Micro Transducer is SMT reflowable and features a compact design and high-pitched reminder sound. This transducer measures only 3mm x 3mm x 2mm and has a -20°C to +70°C operating temperature range. The AD-3A3G offers a 2V to 4V operating voltage range, 110mA consumption current rating, and 4500Hz rated frequency. AATC AD-3A3G Micro Transducer is ideal for wearable devices such as watches and wristbands.