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233621 Huaham Black B700A Wireless Bluetooth CSR Chip Mini Speaker for $ 17.99 [amazon.com]
Use coupon code A2N5XWR3 for $ 8 off during checkout.
Technical Specifications:
-Wireless Specification: Bluetooth
-Wireless protocols: A2DP AVRCP HSP HFP
-Frequency response: 100Hz-20KHz
-Speaker output power: 3W
-SNR: ≥ 75dB
-Distortion: ≤ 1.0%
-Play time: 8 hours
-Charging time: 2-3 hours
-Dimensions (LxWxH): 80x80x44mm
-Weight: 152g