【Power Supply】DC 3.7-5V or 5V 【USB Power SNR】90dB 【THD + N】-70dB 【Weight】Approx. 6g 【Crosstalk】-86dB DNR: 91dB 【Service Range】> 15 meters 【Board Size】31 x 31 x 7mm Supports A2DP / AVCTP / AVDTP / AVRCP / HFP Bluetooth protocols. With LED status indicator. Dual-channel stereo audio output. Excellent lossless sound quality. Equipped with DC 3.7-5V or USB interface. Images 1-5 are reference images. Please refer to the actual photos from the 6th image onwards. Thank you for viewing! Instant purchase OK!! We are committed to shipping quickly(^^) We also have various other items for sale, so please take a look✨ #na goods 41.40