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- Mini Size and Fashion Design,only4g, invisible and lightweight. - Sweat proof, and Anti dropping design for running ,GYM, Sports Technical Data - Bluetooth 4.0TWS Earbuds - Bluetooth CSR 4.0 - Protocol: HFP/A2DP/HSP/AVRCP - Ear buds Battery:60Mah - Charging Box Battery:300Mah - Music time: about 2 hours - Charging time: about 1.5 hours - Range: about 10 Meters - Size:18*25*28mm - Color: White, Black, White+ Green, Black+ Red - Function: Answer, Music play/pause, Quit What's in Box? - 2 x Ear Buds(L/R) - 1 x Charging Cable - 4 x Earmuffs - 1 x OTG Adapter - 1 x User Manual