Pulp One Dozen BLANK Cartons - 140 Pcs BLUETOOTH 4.2 & EDR TECHNOLOGY--Compatible with all Bluetooth-enabled devices. such as iPhone 5/6/7/8, Samsung Galaxy S5/S6/S7, iPad air, laptop, and other smartphones. Instantly connected to your smartphone or tablet from up to 33 feet away. LONGER BATTERY LIFE WITH STORAGE BOX--Equipped 700mAh battery in the portable magnetic charging box, which can support 14 times fully charging for the wireless earbuds. Never worry about low battery when you are out all day. And each earphone has Built in 60 mAh lithium polymer battery, enjoy about up to 8 hours of premium quality music playtime and 6 hours talk time after fully charged. ADVANCED BLUETOOTH 4.1V AND STABLE SINAL TECHNOLOGY--Support fast,easy pairing and stable connection with bluetooth device,up to 33 feet bluetooth range, it is great for hand-free talking and music. MULTIPOINT CONNECTION--At the same time connect 2 mobile phone. MINI&LIGHTWEIGHT WIRELESS HEADPHONE--Weight 0.14 OZ and dimension(L*W*H):0.78 x 0.55 x 0.47 inches only.Super lightweight with ultra mini and invisible design,you can enjoy your wireless earbud anytime and anywhere. MULTIPOINT CONNECTION--At the same time connect 2 mobile phone.