1.Chip:NRF518222.Broadcast Interval:1000ms3.Communication distance: within 50m4.Button battery model: CR20325.Battery capacity:240mAhBroadcast power: -95dB - 4dB (adjustable 1-9 gears)Product features: IP65 waterproof, dustproof (splash-proof, , not soaking)Applications:WearablesMobile BeaconsRezence wireless charging monitoringPC peripheralsProximity/Alert sensorsConsumer Electronics () remote controlsSports, fitness and healthcare sensorssmart RF tagsIntelligent domestic appliancesIndustrial and commercial sensorsmajor minorToys and electronic gamessize: 30 x 30 x 10mmMaterial: plasticcolour: WhitePackage Contents:1 x NRF51822 Bluetooth moduleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.