Description: Features: brand new and high quality 1200 meters ultra-long distance transmission: strong penetration, built-in voice decoding chip. Up to 115 decibels for long distance messaging, sound is loud and clear, does not affect flight. Built-in large capacity lithium battery, long-lasting battery life, continuous shouting for 2 hours. Can be charged by USB port. Applications: event holding, anti-epidemic publicity, crowd evacuation, danger warning, traffic command, etc. Made of high quality ABS materials, light, wear-resistant, minimizing the impact on aircraft life. Small size, easy for installation. Widely for: for X193 PRO, SG906 PRO, X7 PRO, SG901, SG907, E520S, S162, F11, for Elf 3 4 Series, Royal 2, Royal, Royal air series, Zhen, Jing, GW90, GW198, GD91 PRO, M8, for Skydrive ZEN k1, for Meijiaxin b4, LYZ L109, for Harbinson ZINO, for FIMIx8, for Weili X1S, etc. Specification: Material: ABS Optional Color: Black, Gray Remote Control Height: app. 13.5cm(5.31in) Pager Size: app. 13.5x10.2x3.8cm(5.31x4.02x1.50in) Pager Battery: 3.7V 600mAh(built-in lithium battery) Remote Control Battery: 3.7V 800mAh(built-in lithium battery) Pager Charging Time: about 50 minutes Remote Control Charging Time: about 90 minutes Usage Time: about 2 hours Remote Control Distance: about 1200-2000 meters Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Loudspeaker 1 x Remote Control 1 x USB Charging Cable 2 x Magic Sticker Tape 1 x Manual (other accessories demo in the picture is not included.)