Outer length/mm

[Main material]: ABS material

the length in size 28 is about 17 cm

44-45 is suitable (Wear 43-44)

noise-reduction cable

Bluetooth 5.0 Smart Audio Sunglasses with Built-in Speakers & Mic – Music, Calls, and Voice Assistant for iOS & Android Color:Set 7 Outer length/mmNote: Non Apple branded products. Compatible with iPhone and Android models Product information: Material: TR90 Battery capacity: 90mAh Screen size: 146 mm* 62 mm Appearance size: 149*40. 5*161mm Product weight: 25g Applicable people: children, business, the general public, fashion, adults, the elderly Applicable platforms: fully compatible with the Android platform and, Apple iOS platform Body memory: 128kb Camera: No camera Wearing method: head