635/850nm red light therapy belt lipo laser wrap mat body slim belly pad,large size, 210 light beads, especially suitable for removing abdominal and thigh fat  if some of the lamp beads received do not glow, it is because 42 of them are near infrared lamp beads, which cannot be seen by the naked eye.turn on the camera with the mobile phone, you can see the infrared light bead is bright.