B-10 is a compact and convenient wireless microphone system comprising a USB rechargeable transmitter and receiver with a complete set of connecting leads and accessories. The system operates on the license-free 2.4GHz band with intelligent frequency-hopping technology, providing a stable wireless connection. The transmitter has an integral omni-directional microphone and can clip onto clothing for use as a lavalier microphone, and also has a 3.5mm input for a separate microphone is preferred. The receiver also has a spring clip and is supplied with a cold shoe mount for connecting directly to a camera or photographic stand. The top of the receiver has an OLED display for charge and signal status and the 3.5mm output jack can feed headphones or into the camera or smartphone audio inputs. Designed for vloggers or as a discreet lavalier microphone system for presenters and performers alike.Charging voltage: 5Vdc (USB type-C transmitter & receiver)vbCrLfBatteries: 3.7V Li-ion 400mAh (1 each transmitter & receiver)vbCrLfWireless range: Up to 30mvbCrLfCarrier frequency: 2.4GHz bandvbCrLfSampling format: 24-bit, 44.1kHzvbCrLfFrequency response: 50Hz - 20kHzvbCrLfLatency: <5msvbCrLfDynamic range: 96dBvbCrLfTHD +N: <0.2%@1 kHzvbCrLfInput level: 100mVrms(-20dBV) max.vbCrLfBattery operation time: 4 hours (6 hours for receiver)vbCrLfMicrophone: Omni-directional electret condenservbCrLfSPL max.: 110dBvbCrLfDimensions (each): 51 × 42 x 13mm (transmitter / receiver)vbCrLfWeight (each): 28g (transmitter / receiver)vbCrLfDimensions (packed): 173 x 78 x 54mmvbCrLfWeight per set: 220g