Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

description:Technical ParametersBluetooth specification: Bluetooth 3.O + EDRBluetooth protocol:Support L2CAP / A2DP (AVCTP / AVDTP / AVRCP)，For receiving stereo audio signals， it can be controlled by agreement，Audio transmitter side down song operations;Supports HSP / HFP (Handsfree profile)，With a speakerphone， voice communications can be carried outWireless transmission range: 10 ~ 25MAudio noise ratio: ≥95dbBattery Capacity: 800mAhBuilt-in voltage: 3.7VNormal volume playback: 2HSpeaker Specifications: ￠ 40mm plusSpeaker Power: 4Ω / 3WFrequency response: 120HZ-18KHZDimensions: 87.6mm * 80mm * 47mmSingle Weight: 149gCharging voltage: 5V / 500mAFeatures1. The use of advanced Bluetooth audio decoder chip， support all Bluetooth devices;2. Support FM radio， you can listen to radio direct search area，3. sound soft clear dynamic， each structured;4. Micro SD card direct reading;5. The Bluetooth receiver distance can be up to 25 meters6. Support LINE IN audio input， you provide computer speaker function7. Can be directly connected to your phone / tablet / TV and play music Bluetooth pairingcolour:black，green，blue，red