Precautions:
*There is a small letter L / R on the headphone means for Left Ear and R for Right Ear. Right one already paired with Left one, and it will automatically pair with the Left headphone after you turned it on, you need ONLY to pair the Left Headphone with your Smartphone/Device.
*When playing music, only one headset has the sound, it will be right if you re-match the headset.
*If the battery power is low, the red light is always on.
*When the headset is placed in the charging socket, the red light indicates the charging state.

Specification:
*Product Weight: 0.01 kg
*Product Size: 0.79 x 0.79 x 1.06 inches
*Wearing Type : In-Ear
*Function: Answering Phone, Bluetooth, Microphone, Sweatproof
*Driver: 8mm copper-ring loudspeaker
*Impedance: 16 OHM
*Bluetooth version: V4.1 Dual Mode
*Power level: CLASS II DSP phase compensation
*Working voltage: 3.2V - 4.2V
*Bluetooth frequency: 2.4 - 2.48GHz
*Bluetooth distance: less than 10M(30ft)
*Audio transmission protocols: A2DP / AVRCP / high quality stereo
*Power indicator: Red light lightens when charging

Package Includes:
1 * D900 Mini Bluetooth Earphones
1 * Protable Intelligent Charging Case
1 * USB Charging Lead
1 * User Manual
1 * Storage Bag