Feature: H1 is designed for sports with its light body and foldable bone structureThe headphone is super lightweight, 55g only, giving it no pressure to wear when doing sports. Foldable bones shrink its size. Just pack in pocket or handbag and ready to go.H1 can connect to two Bluetooth mobile phones and choose music play from either phones.  Specifications:1. Type: Neckband 2. Supports Bluetooth A2DP, AVRCP, and HS/HF profiles 3. Standby time: 300 hours 4. Usage time: 8 hours of playback time or talktime and Charging time: 2.5 hours 5. Weight: 55.2g 6. Bluetooth operational range: about 10M 7. Built-in lithium-ion polymer battery 8. Bluetooth 4.0 technology 9. Input power: 5V 10. Pairs with all A2DP-enabled devices including smartphones, tablets, laptops, PC, digital Package Included(Gift box packing): 1 x Zealot Bluetooth Stereo Headphone 1 x Micro USB Charging Cable 4 x Earbuds 1 x User ManualShipping: Item will be tested and shipped out in 1 business day, tracking number will be uploaded once it appears.