Bluetooth 4.2 Specification: Input voltage: DC5V-35V Bluetooth version: 4.2 Bluetooth name: LQSC_ BT Operating temperature: - 40 / to 85 / Overall dimension: 55 / 32 / 9 (length / width / height) (mm), can be combined Net weight of product: 7g LED indicator description: Flash: waiting for connection Slow flash: audio playing Always on: connected Bluetooth 5.0 / 4.1 Specifications: Power Supply 3.7-5V SNR 90dB THD/N -70dB Crosstalk -86dB DNR 91dB Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP LOS >15m Package Contents: Bluetooth 4.2： Bluetooth decoding board / 1 2.54mm3P audio shielded wire / 1 2.54mm3P socket terminal / 1 Package Contents: Bluetooth 5.0 / 4.1 Bluetooth decoding board / 1 Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is /- 1-3cm.