Could you use a phone app or somehow use these to help with hearing loss?

Great question! Although our headphones are not hearing devices, we do have customers who use them to assist with hearing, usually by pairing the headphones to their phone and accessing a hearing aid app like Petralex, Ear Spy, Ear Trumpet, or Hear You Now. These apps use the mic on the phone to pick up surrounding sound and transmit it through the headphones.

What's the difference between this model and the as600rd

The AS600 model is our Trekz Titanium. The Trekz Titanium and Trekz Air function in the same way, however the new Trekz Air is 20% lighter, has a full titanium wraparound making it more durable, has a new antenna for better Bluetooth connectivity, and improved dual noise-cancelling microphones.

is it comfortable when hanging on the ears?

Very comfortable. You will not notice you are even wearing them. I have glasses and normally wear a hat no problwms.. The sound is great.too. I would recommend

Specific uses for product	Sport and exercises
Compatible devices	Universal
Control type	Voice Control
Cable feature	Without Cable
Item weight	376 g
Water resistance level	Water Resistant
Style	Intraaural
Product Dimensions	13.6 x 6.5 x 16.7 cm; 376.48 g
Batteries	1 CR2 batteries required.
Item model number	AS650MB
Connector	Wireless
Material Type	Titanium
Size	Normal
Battery Type	Lithium Ion
Colour Screen	No
Voltage	1 Volts
Item Weight	376 g

AfterShokz Trekz Air AS650MB Wireless Bone Conduction Headphones Bluetooth Sweatproof Lightweight with Mic for Sports, Blue

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