Features: - This Bluetooth helmet headset is meticulously designed to integrate with the internal structure of motorcycle helmets. - Utilises the latest Bluetooth 4.1+EDR technology for superior signal transmission. - Ultra-low power consumption design, compatible with all Bluetooth devices. - Supports automatic call answering for safe and efficient operation. - Supports music fast-forward/rewind, volume adjustment, play/pause, and auto-redial functions for straightforward operation. Certified to stringent European and American environmental and safety standards including CE, RoHS, and FCC. - Features a built-in 500mA high-capacity battery for extended standby and operational time. Specifications: - Colour: Black - Model: BT12 - Bluetooth Version: V5.0+EDR - Operating Frequency Band: 2.4026GHz-2.480GHz - Transmission Range: 10 metres (subject to environmental factors and device compatibility) - Microphone Range: 1 metre - Battery: 3.7V/500mAh rechargeable battery (built-in) - Charging Time: 4-5 hours - Standby Time: Approx. 180 hours - Continuous Operating Time: Approx. 20 hours - Dimensions: Approx. 50 x 35 x 12 mm - Packaged weight: 173 grams Package contents: 1 x Bluetooth helmet headset (helmet not included) 1 x Earbuds 1 x USB data cable Notes: 1. Actual product colours may vary slightly from images due to monitor and lighting differences. Your understanding is appreciated. 2. Manual measurements may have a 1-3 cm margin of error. Your understanding is appreciated.