Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Impedance levels vary (33 ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (192 g (including rechargeable battery) vs 131 g), which may affect comfort during extended use. The driver size differs between the two (40 mm vs NA), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (20 - 20,000 Hz vs 22 - 18,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Audio Technica ATH-ANC29 and Beyerdynamic DTX 350M offer different noise cancellation capabilities (Yes (Reduces Noise up to 18 dB) vs NA), which can impact how effectively they block external noise. Audio Technica ATH-ANC29 and Beyerdynamic DTX 350M are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. From a usability standpoint, both models provide a reliable and premium headphone experience. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.