Good find. I also have a Dan Technology hot comb but it is straight not curved. It goes down to 200F and has a basic dial so you have to guess at the exact temperature. Also it was $35. Looks like yours is a much better deal.
I think curved comb is probably better for getting close to the scalp but otherwise I'm not sure if it matters straight or curved.
Get a beard straightener on amazon it’ll make it look a lot better. It’s not think it’s just just curly mine is the same but when it’s straightened it fixes that up.
DAN Technology Anti-Scald 200℉-500℉ Electric Press Hot Comb for Black Hair, Beard and Wigs, Ceramic Unisex Hair Beard Straightener and Curler, Dual Voltage for Travel, Home and Salon Use https://www.amazon.com/dp/B08T9ZBNN9/ref=cm_sw_r_cp_api_glt_fabc_CSGHD3NVRGEBPXGVEMJB?_encoding=UTF8&psc=1
Get yourself a beard straightener on amazon. If you’ve got crazy coarse thick facial hair like I do it’s the only way to get it straight. I got a good one for around 30 you need one that has teeth on the comb pretty close together so you can get those pain in the ass ones tamed. Also I had to get one that heats hotter than most (500F) since mine is so thick. That and a good balm/wax. I like grave before shave tames my beard without leaving it greasy and it smells dope.
Straightener: DAN Technology Anti-Scald 200℉-500℉ Electric Press Hot Comb for Black Hair, Beard and Wigs, Ceramic Unisex Hair Beard Straightener and Curler, Dual Voltage for Travel, Home and Salon Use https://www.amazon.com/dp/B08T9ZBNN9/ref=cm_sw_r_cp_api_glt_fabc_51904ZCZFYRGPDSFX4J0?_encoding=UTF8&psc=1
Balm: GRAVE BEFORE SHAVE Leather/Cedar wood scent Beard Balm (2 oz. Tin) https://www.amazon.com/dp/B07GXWX9Z6/ref=cm_sw_r_cp_api_glt_fabc_RZ7KXSNJ46SPWHSM3AZQ?_encoding=UTF8&psc=1