The Kestrel KST1000 Shot Timer with LiNK is the most versatile, rugged and dependable shot timer available. Backed by a 5-year warranty, this timer won't quit until you do.Features5 nameable setting presets2 Easy- to- use screens from your hip or in your handCompatible with dry fire and suppressed shootingExtra Loud BuzzerIP67 Waterproof and dust-proofBluetooth Link Enabled Durable- Drop tested to MIL-STD-810G standards