... 35g 3.Material: ABS + PE 4.Music Format: MP3 etc. Function IntroductionThis product is suitable for sports, ... enjoy portable, lightweight, stylish, trend, new, unique, fun, high-fidelity sound !Stylish and cool wireless neckband, sporty appearance, so ... Material: ABS + PE Product weight: 35gMusic Format: MP3 etc. Signal to noise ratio: 95Db;USB version: ... Temperature: -20 ° C-80 ° C; Mini Sport mp3